Massacre Wurm [Core Set 2021 Prerelease Promos] Daretti {T}: Counter target activated ability

{T}: Counter target activated ability from an artifact source unless that ability's controller pays {W}

Remove three charge counters from Magistrate's Scepter: Take an extra turn after this one

Set: Beta Edition Type: Instant Rarity: Rare Cost: {U} Change the text of target spell or permanent by replacing all instances of one basic land type with another

It has "This creature's power and toughness are each equal to your life total

and Nether Spirits for the win

Massacre Wurm [Core Set 2021 Prerelease Promos] Daretti {T}: Counter target activated abilitySet: Core Set 2021 Prerelease Promos Type: Creature Phyrexian Wurm Rarity: Mythic Cost: {3}{B}{B}{B} When Massacre Wurm enters the battlefield, creatures your opponents control get 2 2 until end of turn. Whenever a creature an opponent controls dies, that player loses 2 life.