Agatha of the Vile Cauldron [Wilds of Eldraine Prerelease Promos]

Set: Wilds of Eldraine Prerelease Promos Type: Legendary Creature — Human Warlock Rarity: Mythic Cost: {R}{G} Activated abilities of creatures you control cost X less to activate, where X is Agatha of the Vile Cauldron's power. This effect can't reduce the mana in that cost to less than one mana.4RG: Other creatures you control get +1/+1 and gain trample and haste until end of turn.