Few questions on Character card deck system

You'd only be able to get either Warrior Rush or Resistance's Spark, the three cards have to be in the same deck for the set bonus to apply, so Demon Slayer will either complete Warrior Rush or Resistance's Spark. Since they're all at least S Ranked, you'd get the S Rank set effect twice, though.



It's Resistance

Ok, so no real options for a good set bonus until I transfer my Crusader to Bera (first set would be Paladin-DrK-Cannoneer for an Adventurer bonus, or Paladin-DrK-Aran for Warrior bonus, second Aran-DS-X or Cannoneer-DS-X.)

Meh, S + A rank set bonuses aren't too bad.

 Spoiler

167 Paladin: Adventurer Warrior
158 Aran: Hero Warrior
143 Dark Knight: Adventurer Warrior
121 Demon Slayer: Resistance Warrior
121 Cannoneer: Adventurer Pirate
120 Dawn Warrior: Cygnus Warrior
87 Outlaw: Adventurer Pirate
70 Battle Mage: Resistance Magician
70 Mercedes: Hero Bowman
37 Fighter: Adventurer Warrior

3x S Warrior (Pala Aran DS) or 3x S Adventurer (Pala DrK Cannoneer) are possible, and 3x A Warrior (Aran DS DW) or 3x A Adventurer (DK Cannoneer Outlaw)

So I guess I get S Warrior + A Adv. or S Adv. + A Warrior. Either way the Paladin, Aran, DrK, Cannoneer, and DS individual bonuses get used. 6th char is DW (3% wdef) or Outlaw (6% summon duration). None of my characters use summons with annoyingly short timers except the Outlaw itself, so meh. 2 all stats vs. 2% HP to damage, I think the 2% HP to damage wins so the S Warrior set is marginally better.