Season of the Witch

At the beginning of your upkeep, sacrifice this enchantment unless you pay 2 life. At the beginning of the end step, destroy all untapped creatures that didn't attack this turn, except for creatures that couldn't attack.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o2n050nf1pb1hln7m09bb.