Table of Contents

Tier Rating

Analysis by RedFerrari1998
Delthea - Free Spirit

5 Legacy

Obtainable as a 5 during certain summoning events only.

Hero Stats

Max Avg Total Stats at Lvl 40
HP 33
ATK 36
SPD 34
DEF 13
RES 31

Stat Variations

Level 1 Stat Variation
Low 15 9 7 2 6
Middle 16 10 8 3 7
High 17 11 9 4 8

Level 40 Stat Variations
Low 30 33 31 10 28
Middle 33 36 34 13 31
High 36 39 37 17 34

IV Sets

Key stats worth increasing through nature if possible.
Complementary stats that matter, but not to the point of picking them over key stats for nature increase.
Relatively worthless stat that can safely be decreased through nature.


  • +SPD: The ideal stat for Delthea to boost is Speed. A Speed asset will take Delthea from 34 Speed to 37 Speed, increasing her doubling potential and allowing her to more easily resist doubles from faster mages such as Nino.

  • +ATK: Boosting Delthea’s Attack is also a good option. With Delthea being tied for the highest Attack available on a blue mage, an Attack asset will only increase her already very high damage potential even further.


  • RES: Delthea actually has pretty good Resistance. While her low HP hinders her ability to take a lot of magical hits, she can certainly take a hit or two from opposing magical foes. As such, keeping Resistance neutral is recommended since it’s not beneficial enough for an asset nor weak enough for a flaw.


  • -HP: Delthea comes with a very low HP stat of 33. While her HP is more beneficial than her Defense, a HP flaw Delthea will perform fine, making it a nice choice of flaw for her.

  • -DEF: There’s no other way to put it, Delthea’s 13 Defense is simply terrible. Since she’ll be KO’d by physical units easily regardless, a Defense flaw will barely have an impact on her performance.

Skill Sets

Who do you bow down to now? (Offensive Support)

Dark Aura A Fury 3
Alternate: Death Blow 3
Draw Back B Desperation 3
Draconic Aura C Drive Atk 2
SP1365SSpeed +3

Show Explanation/Analysis
  • Preferred IV: +SPD or +ATK / -DEF

  • Weapon: Dark Aura

  • Assist: Draw Back / Rally assists / Flexible

  • Special: Draconic Aura / Moonbow / Luna

  • Passive A: Fury / Life and Death / Death Blow

  • Passive B: Desperation

  • Passive C: Drive Atk / Drive passives

  • Sacred Seal: Speed +3 / Attack +3 / Spur passives / Hone or Fortify passive

Delthea’s primary set allows her to serve as both a great offensive unit and great support unit at the same time without sacrificing one role for the other. It is also budget friendly, being quite easy to build with no required skill being locked to rare units.

From an offensive perspective, the Speed asset gets Delthea to 37 Speed, giving her much better doubling potential. Fury serves as a great choice for the A slot, giving Delthea an all-round boost to her combat potential with boosts in all stats bar HP. Desperation in the B slot also permits Delthea to perform any follow-up attack immediately, allowing her to potentially KO Hector and Dorcas before they can destroy her on their retaliation. Draconic Aura plays off of Delthea’s insanely high Attack, though Moonbow and Luna also serve as great options. As Alternatives, an Attack asset Delthea will also work very well while Life and Death and her default Death Blow 3 are fine alternatives for her A slot.

From a support perspective, Delthea’s dark aura grants a huge boost of Attack to any melee range unit. This is further boosted with her Drive Attack C slot skill which boosts all allies within 2 spaces by 3 Attack. She can run a variety of Assist skills, such as Reposition to help units out of danger or a Rally of choice for further boosting. What C slot you use for boost is completely up to player preference, but the fact that she comes with Drive Attack by default makes it a very appealing option.

Your Sacred Seal of choice can boost either her offensive or support potential. A simple Speed or Attack Sacred Seal will help her offensively while a Spur, Hone, or Fortify Sacred Seal will increase her supporting prowess.

Who’s the strongest ever? ME! (Blade)

Blárblade+ A Swift Sparrow 2
Alternate: Fury 3
Draw Back B Desperation 3
Moonbow C Odd Atk Wave 3
Alternate: Drive Atk 2
SP1995SSpeed +3

Show Explanation/Analysis
  • Preferred IV: +SPD or +ATK / -DEF

  • Weapon: Blarblade+

  • Assist: Draw Back / Ardent Sacrifice / Flexible

  • Special: Moonbow / Draconic Aura

  • Passive A: Swift Sparrow / Life and Death / Fury

  • Passive B: Desperation

  • Passive C: Odd Atk Wave / Drive Atk / Flexible

  • Sacred Seal: Speed +3 / Attack +3

This Delthea setup is your typical Blade tome setup, ditching her support potential for full-on offensive capabilities.

The Blarblade tome is the star of the show here. This tome will deal extra damage based on the amount of Hone and Fortify boosts that Delthea has received, so if Delthea has been given a lot of buffs from a unit such as Ephraim or Eirika, she will deal an immense amount of damage with the Blade tome.

As for skills, Swift Sparrow makes for a fantastic A slot choice, granting Delthea with a +4 boost to Attack and Speed when initiating combat, making it a solid choice for boost her already high offensive power. Life and Death is a good alternative but do be careful as it lowers Delthea’s already low Defense even lower to single digit levels, though this is less of a problem for Delthea with a higher merge level. Fury is a good budget option for the A slot. Combine your A slot skill of choice with Desperation for immediate follow-up when below 75%, a good offensive Special such as Moonbow or Draconic Aura and either an Attack or Speed Sacred Seal and you’ll have one powerful offensive Delthea.

The C slot and Assist slot are mostly open to player preference. Delthea’s default Drive Attack will work absolutely fine as the C slot with this build, but this slot is otherwise completely open. The Assist slot is the same with basically anything being an option. A movement skill like Reposition is good for team support while Ardent Sacrifice is another good choice which allows Delthea to instantly reach Desperation range in a single use.


Delthea comes through into the world of heroes as a powerful blue mage, comparably similar to Linde. Delthea possesses great offensive potential with the added bonus of being a great support unit. This combined offensive and support prowess makes Delthea a very desirable unit as she can serve as an effective combat unit and effective unit buffer at the same time.

Delthea’s offensive power comes from her great Attack and Speed. At 36 Attack and 34 Speed, Delthea has the sort of offensive stat spread that’s quite typical for offensive mages, identical to that of Summer Elise. This combined with her personal tome gives Delthea a strong offensive presence on the battlefield.

Meanwhile, Delthea’s supporting potential comes from her tome, the Dark Aura. This tome grants a hone-style buff of +6 Attack to melee range units who start their turn next to Delthea. This combined with her default Drive Attack skill allows her to buff the Attack of melee allies by a potential 9 Attack, making her an excellent choice as a support unit alongside melee allies.

Delthea is not without her drawbacks. Delthea is very physically frail with the poorest Defense in the game and low HP, meaning that physical units will make short work of her. She does have good Resistance, but her low HP means that mages such as Nino and Reinhardt are quite capable of a ORKO against her. This severely hinders Delthea’s enemy phase performance, relegating her to being pretty much only a player phase unit, though this can be said for most offensive mages.

All in all, Delthea serves as a solid choice for a blue mage. She comes pre-packaged with great skills meaning she is great on a budget and works very well as both an offensive and supporting unit. If you want a powerful blue mage for your team, Delthea can certainly fill the role well.


Great Attack and Speed

At 36 Attack neutral, Delthea has the tied highest Attack stat of any blue mage, tying with Lute and Mae. This means she reaches 50 Attack with Dark Aura and hits incredibly hard. 34 Speed, while not the best for doubling potential at base, is high enough that it can be heavily boosted with skills to make her very competent at doubling, giving her a strong overall offensive presence.

Dark Aura

Dark Aura is Delthea’s personal tome, allowing her to buff the Attack of melee units (anyone using Sword, Lance, Axe or Dragonstone) by 6 points. This is a hone-style buff, so melee units will need to start their turn next to Delthea to get the boost and the boost will NOT stack with Hone Attack or Rally Attack. This makes Delthea a great support unit for practically any melee unit.

Great starting loadout

Delthea comes with great base skills in Miracle, Death Blow and Drive Attack. Death Blow increases Delthea’s already insanely high damage output, making it a natural fit on her. Drive Attack has great synergy with Dark Aura, turning her into a fantastic supporting unit for melee characters. Miracle is the one weak link, but it is still a decent Special if no other option is available. This means Delthea is great for players looking for a character who’s cheap to build since Delthea can run with all of her base skills quite effectively.


The Worst Defense

At 13 Defense, Delthea has the lowest Defense stat in the entire game. Because of this, she is very susceptible to any form of Attack which deals physical damage. Delthea will need to take caution when attacking any physical attacker with Distant Counter, especially those with a weapon triangle advantage against her.

Low HP

At a neutral HP of 33, Delthea has one of the lowest HP stats in the game. When combined with Delthea’s pitiful Defense, this makes her extremely weak to physical attacks, with even reds being able to easily cut through her defenses.

Team Options

Delthea is best used as a combination offensive support unit, so having units she can actually boost alongside her will be ideal. Delthea will struggle against greens, most notably DC greens such as Hector and Dorcas as well as magical walls such as Deidre. While she is capable of KO’ing Hector and Dorcas, it can be somewhat unreliable depending on the situation. Having allies to combat these units is a good idea.

  • Hard melee hitters: Units such as Ephraim, Ike, and Hector will greatly enjoy the immense power boost from Delthea, raising their already extremely high Attack even further.

  • Dragons: Dragon units are the only magic users who can utilize Dark Aura, so Dragons such as Adult Tiki, Young Tiki, Nowi, Myrrh, Fallen Robin, and Fae will all very much enjoy the boost from Delthea. Dragons are also great for dealing with Brave Lyn due to refined breaths targeting the lower defensive stat of ranged unit and also that their counters are not blocked by Sacae's Blessing.

  • Distant Counter red units: Red units such as Ryoma, Zelgius and Black Knight can handle threats from all ranges, making all three effective all-round green counters. 

  • Red mages: Mages such as Celica, SM Eirika, and Winter Tharja all make for good ranged options for red units and are all good at handling green units.


  • Distant Counter physical units: If a unit has Distant Counter, chances are that Delthea will need to land a OHKO in order to survive due to her frail nature. While this is generally not a problem for Delthea against red DC units like Ike or Ryoma, she can struggle to OHKO DC greens such as Hector and Dorcas, resulting in them getting a OHKO on her in return. She will also struggle against Fjorm thanks to her high resistance and unique Special Ice Mirror.

  • Refined Distant Counter Dragons: With the weapon refinery, Dragonstones were given a new effect where they target the enemies lower defensive stat if they are a ranged fighter. This means that Delthea cannot safely attack dragons anymore since they will now target her Defense rather than Resistance. Myrrh, Fae, and Fallen Robin are all of particular notice since all three have a weapon triangle advantage against Delthea.

  • Fast Player Phase physical units: Any physical unit designed to approach and attack on Player Phase will destroy Delthea. Units such as Ayra, Mia, Brave Lyn, Legendary Ephraim, and Bridal Cordelia will all ORKO Delthea with little to no problem, so it is heavily advised to avoid using Delthea for baiting.

Weapon Skills

Weapons SP Rng. Mt.
Blue Tome Users Only
50 2 4
Blue Tome Users Only
100 2 6
Blue Tome Users Only
200 2 9
Dark AuraGrants adjacent allies who use sword, axes, lances, dragonstones, or beast damage, Atk +6 through their next actions at the start of each turn.
Learns by default at 5 ★
Non-Inheritable skill.
400 2 14
Weapon Evolution
Weapon Upgrades
Weapon Upgrades

Special Skills

Special Skills SP Turns
MiracleIf unit's HP > 1 and foe would reduce unit's HP to 0, unit survives with 1 HP.
Learns by default at 5 ★
Inheritable by all units.
200 5

Passive Skills

Passive Skills SP Slot
Death Blow 1Grants Atk+2 if unit initiates combat.
Non-inheritable by Staff-wielding units.
Death Blow 2Grants Atk+4 if unit initiates combat.
Non-inheritable by Staff-wielding units.
Death Blow 3Grants Atk+6 if unit initiates combat.
Non-inheritable by Staff-wielding units.
Unlocks at 5 ★
Spur Atk 1Grants adjacent allies Atk+2 during combat.
Inheritable by all units.
Drive Atk 1Grants allies within 2 spaces Atk+2 during combat.
Inheritable by all units.
Drive Atk 2Grants allies within 2 spaces Atk+3 during combat.
Inheritable by all units.
Unlocks at 5 ★

Other Info

Fire Emblem Echoes

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