Agatha of the Vile Cauldron 199p/200 (Promo Pack: Wilds of Eldraine)

Activated abilities of creatures you control cost {X} less to activate, where X is Agatha's power. This effect can't reduce the mana in that cost to less than one mana. {4}{R}{G}: Other creatures you control get +1/+1 and gain trample and haste until end of turn.

NM - $13.70
LP - $10.90
MP - $8.20
HP - $5.50
DMG - $2.80