Missconceptions and clarifications on the game

From all the question and answer i read i found many things that players don't know or many missconceptions that many people have, i'll list those that i remember here just to help anyone who could need it.

BUFFS
In this game we have 2 tipes of buffs:
- Visible buffs (from hone, fortify, Tactics), in the description of those skills we have thing like "at the start of the turn buff x stat for 1 turn" you can see those buff by tapping on the buffed character, they don't stack (only the highest value is applied), those buffs affect bladetomes and Sieglinde. Those are the only buffs affected by panic ploy
- Invisible buffs (from spur, goad, ward and drive) in the description of those skills we have "grants allies +x on a stat during combat", you can't see those buffs untill you start a fight, they can stack infinitely and don't affect bladetomes and Sieglinde.

DEBUFF
We have only visible debuffs for now and work the same way as visible buffs, the only invisible debuff comes from Loprous and works the same way as invisible debuffs

TACTIC SKILLS
They buff if unit movement type (infantry, flier, armored and cavalry) in the team is <=2, it says movement type and not just movement. Same with Ostia's pulse.

COOLDOWN ACCELERATOR THAT ACTIVATE DURING COMBAT
The skills that have those effects are: Heavy blade, Flashing blade, Steady breath, Warding breath, Bold fighter, Vengefull fighter, Ayra's blade, Blazing durandal and Summer's breath.
Those effects can't stack, meaning only one of the effetcts that accelerate cooldown will be active at a time, as their descriptions say. You won't counter Guard by using 2 of those skills to still get the cooldown to go down by 2.

FOLLOW UPS
You can't get more that 1 follow up, no matter how much you outspeed you enemy

EFFECT CANCELING (i don't know other ways to call it)
There are skill that grant and cancel follow ups, breaker skills have 2 effects: one that grants follow ups and one that cancel enemy follow ups.
If 2 of those skills contrast each other, they will cancel effects, for example if you have a character with swordbreaker and attack a sword unit with QR that's what happens: you will double no matter the spd since the first part of the effect of swordbreaker gives you a garanteed follow up, while the enemy will double only if he outspeed you by 5 or more spd since the second part of swordbreaker will cancel out QR, this happens with all skills.

ARENA POINTS
Your arena points will be affected by:
- BST, this is a value which is calculated by adding the value of the 5 stat of a character, without counting wepon mt and effect, passives, seal and merges. This value affect you score every 5 points in bst (160 BST score the same as 164, while 165 will score more).
- Merges, every merge will affect your score
- SP cost, you have to add the points needed for everything(weapon, assist, special, passives and seal) your character has (240SP costing skills will cost 360SP if you inherited it but it will still count as 240SP), this affect your score every 100 SP spent (1000 total SP spent will score the same as 1090, while 1100 will score more)
- Blessing, if you have the active blessing with the right Legendary hero you score will increaseù
This video explain crearly how to calculate points: https://www.youtube.com/watch?v=dHdqP1GK17E

Add comments if i forgot something and i will edit this post, if this comes out as usefull i will repost it every week so that new players can read it if that's not a problem