Hi there! Arena Prowess is not that good to use, Bloodthirsty Demon or Root of Warrior are still better to use tho maybe some lineups will consider using Arena Prowess but for ordinary daily teams, its a no no .. If you wanna try to use some new passive skills of yours maybe try using the 2nd Passive Skill Heart Flux, it think it is better than the Lightning Enhancement Skill for Group's Capture Summon(and this is the only event i think this skill will work best), specially if your group activated the 100chakra each round bonus .. instead of having 40%atk and 40% ninjutsu, i am getting 160% atk(80chakra) on my 2nd round and 3rd round :D