Prof. Snape, Master of Potions

Intimidate Deathtouch

When Prof. Snape enters the battlefield or attacks, create a Potion-Token.

At the beginning of each precombat main phase you may sacrifice a Potion-Token. If you do, put a Brewing-Counter on Prof. Snape.
At the beginning of your upkeep, create two Potion Tokens for each Brewing-Counter on Prof. Snape.

Well, it may have escaped your notice, but life isn’t fair.