Raikiri blows up cards for free(similar to ice barrier), onimaru is effect destruction immune with 3000atk, chidori brings them back if they die, blackbird close negates monster effects and summons black winged dragon,
Delta crow is a better dark magic attack, and because of the black wing style, all of this is reasonably easy puzzle to pull off. It’s like doing a duel quiz. It’s actually really refreshing and fun.