Rimuru Tempest

Commander ninjutsu {u}{b}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand or the command zone tapped and attacking.)
Whenever a Ninja you control deals combat damage to a player, reveal the top card of your library and put that card into your hand. Each opponent loses life equal to that card's mana value.
“If it looks like I stand no chance I’ll run away and think up a new plan, but otherwise, I should see how strong it is with my own eyes"