Moon-Circuit Hacker is a common Enchantment Creature — Human Ninja card from Foundations Jumpstart (J25), collector number 327. Current market price: $0.28, TCGplayer market prices via Scryfall.
Ninjutsu {U} ({U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever this creature deals combat damage to a player, you may draw a card. If you do, discard a card unless this creature entered this turn.