Robbbie Rotten

At the beginning of your upkeep, target opponent may have you yell out "We are number one". If you do, put a Villain counter on Robbie Rotten and tap him. If you don't, draw a number of cards equal to the number of Villain counters on Robbie Rotten.
{3}{u}: You may cast a card with converted mana cost X, where X is the number of Villain counters on Robbie Rotten divided by 2, rounded down.