Professor Chaos

When a creature enters the battlefield, flip a coin. if you win, draw a card.
When you flip a coin, you may pay {u/r}{u/r}{p/r}{p/u} and re-flip that coin.
When a creature attacks, flip a coin. If it comes up heads, its power becomes zero until the end of combat. If it comes up tails, double its power and give it first strike.
When a creature attacks, if its controller has more than one opponent, its controller assigns each of their opponents a number, and that creature attacks the opponent the rol