Bill McConkey

"That's the most foul, cruel, and bad-tempered rodent you ever set eyes on."
—Tim the Enchanter

Kezzerdrix

First strike
At the beginning of your upkeep, if your opponents control no creatures, this creature deals 4 damage to you.

Sol Ring

"We could be on the verge of a four-fold cross rip. A PKE surge of incredible, even dangerous proportions."
—Dr. Raymond Stantz

Incarnation Technique

Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it.)
Mill five cards, then return a creature card from your graveyard to the battlefield.