Selvala, Heart of the Wilds 320 (Commander Masters)

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 - $11.30
LP - $9.10
MP - $6.80
HP - $4.60
DMG - $2.30