Zero mana for four damage is nasty, and it puts any Red Deck Wins player into the driver's seat for a nasty game-winning damage spike
However, Confusion can stack with Burned and Poisoned, meaning a Pokemon can be affected by all three at once
Well, I just thought of one I missed myself
It's not as much of a jump as you get by Shifting a card, but it also doesn't rely on having specific cards in play and in your hand
Legendary Creature - Human Rogue Nimble Trapfinder This creature can't be blocked if you had another Cleric, Rogue, Warrior, or Wizard enter the battlefield under your control this turn
This also benefits the sets many cast a noncreature spell triggers just remember that saga creatures will not count there