Selvala Heart of the Wilds 70 (The List Reprints)

Whenever another creature enters, its controller may draw a card if its power is greater than each other creature's power. {G}, {T}: Add X mana in any combination of colors, where X is the greatest power among creatures you control.

NM - $9.90
LP - $7.90
MP - $5.90
HP - $4.00
DMG - $2.20