Ghitu Amplifier is a common Creature — Human Wizard card from Dominaria United (DMU), collector number 127. Current market price: $0.12 (foil $0.14), TCGplayer market prices via Scryfall.
Kicker {2}{U} (You may pay an additional {2}{U} as you cast this spell.) When this creature enters, if it was kicked, return target creature an opponent controls to its owner's hand. Whenever you cast an instant or sorcery spell, this creature gets +2/+0 until end of turn.