Might of the Masses [Core Set 2020] Condition:Heavily Played change Shape Stealer's base power

change Shape Stealer's base power and toughness to that creature's power and toughness until end of turn

destroy target artifact or enchantment an opponent controls with mana value less than or equal to that amount of excess damage

but I believe a more mundane power source might suffice

Set: Shadows over Innistrad Type: Sorcery Rarity: Rare Cost: {G} Search your library for a basic land card

That's why I'm never the messenger

Might of the Masses [Core Set 2020] Condition:Heavily Played change Shape Stealer's base powerSet: Core Set 2020 Type: Instant Rarity: Uncommon Cost: {G} Target creature gets +1 +1 until end of turn for each creature you control. The Joraga elves never need ask a troll to leave their territory. They merely grant it their combined strength, and it can't resist embarking on a merry rampage.