Covert Technician

   Artifact Creature — Human Ninja

Ninjutsu (, Return an unblocked attacker you control to hand; Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Covert Technician deals combat damage to a player, you may put an artifact card with mana value less than or equal to that damage from your hand onto the battlefield.

2/4

Illustrated by Daisuke Izuka