Selvala, Heart of the Wilds 70 (Conspiracy: Take the Crown)

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 - $8.20
LP - $6.60
MP - $4.90
HP - $3.30
DMG - $2.20