Enlightenment

You cannot Summon the turn you activate this card. Activate at the end of the Damage Step, if a Spellcaster-Type monster you control attacked and destroyed an opponent's monster by battle. That monster can attack again (immediately).

From Yu-Gi-Oh! Trading Card Game.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6nogzw27mwsb1iq09jxwrm.