Venus, Torn Between Worlds

Mana cost: {4}{G}

Legendary Creature — Mutant Frog Turtle

Whenever Venus is dealt damage, put that many +1/+1 counters on her. (She must survive the damage to get the counters.) Whenever a creature you control with a counter on it deals combat damage to a player, you may pay {U}. If you do, draw a card.