I think the best summon is the black knight , but after two summons I've only gotten 4 stars (is it possible to get five?). also would any others be worth summoning just to get the skills that are really good to inherit onto another hero? if there's an article about it that would be fantastic.
Heroic Grails only give you 4 stars. Sorry buddy. A lot of GHB units are good fodder, and you could check their skills by tapping the + icon on their hero page. You don't need to actually use the grails to see their skills. For fodder, Brazen Def/Res is on Kana, and Brazen Atk/Spd is on Linus. Arvis, Saias, and Julius have ploy skills at 4 star. Marisa has Infantry Pulse and Joshua has Close Defense. find out other heroes that you like from their pages.
Yes, BK is the best summon, but H Grails are locked at 4* rarity. There are several others who might be worth summoning for inheritance, like Marisa for Infantry Pulse, HDorcas for HackoLantern or Wary Fighter, Berkut for his Lance if you're desperate, Joshua for Windsweep, etc.
I personally consider BK one of the worse summons unless you don't have him, in which case one copy is not bad.
As units, I favour W.Cecilia, Finn, maybe LA Eliwood, maybe Aversa...Y.Azura if you don't already have her... maybe Joshua... not as convinced about the rest
For fodder, tons of amazing options but infantry pulse and hack-o-lantern are huge. Also good are spd ploy, drive atk, ardent service, any of the brazens and bonds, atk and def ploys, Goodie Boot, and other options which I can't name off the top of my head
BK is one of the worst if you are determined and able to get Zelgius. BK is literally completely inferior to Zel, however, if you will never be able to +10 him, then BK is still a stupidly strong unit thanks to Black Luna and built in DC.
In my opinion, Aversa is by far the strongest GHB unit. Her weapon is so stupid, she completely breaks most AR teams (who are clumped together) and is an absolutely insane support unit in Arena (I equipped her with Atk/Res Link, reposition and Guidance and she just hard carries). Merging her up REALLY increases her effectiveness, too, as she fully utilizes each stat more then any character I can think off. She can reach very high HP (58 without summoner support), and her combat stats are decent enough to win Triangle advantageous matchups. 58HP and 33 res with 41 speed unbuffed also make her a very capable mage bait.
I guarantuee if you try her, you will stick with it.
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