What's the better character card deck set, Thief or Pirate?

By the way, isn't the warrior set useful too?

Kinda depends what it's added to. Even on a character with 99,999 hp, 10% HP to damage is only 10k damage. (although that does bring up an interesting point if you stacked 2 warrior sets on an HP warrior). Most classes are more like 8-10k HP at high levels, so maybe 800 damage per hit.

Bishop Bahamut, Bowman/Xbow Bird, wild hunter bird, Sair after revamp gets a few summons...

I will probably use Sair / Cedes / Aran or take out Sair and put something better...

Except the TC doesn't play any of those.

If it were summon DAMAGE instead of DURATION it wouldn't be such a s'hitty card. Mechanic is better than sair simply because base durations are far longer for buffs than for summons and pretty much every single summon is lagless casting whereas buffing can be upwards of 15-30 seconds depending on the class and amount of decent skills so the less often you have to do that the better it is for damage over time.

It also helps wild hunters to make feline berserk 150 sec rather than 120 so it fits with the cooldown=hello free decent hb that is 2x as good.