Selvala, Heart of the Wilds [M3C - 246]

Rarity: M #: 246 Creature Type or Sub Type: Legendary Creature — Elf Scout P: 2 T: 3 Rules Text Contains: Whenever another creature enters the battlefield, 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 to your mana pool, where X is the greatest power among creatures you control.