Sin Collector | Creature | Human Cleric | When Sin Collector enters the battlefield, target opponent reveals their hand. You choose an instant or sorcery card from it and exile that card. | Mike Bierek
Pilfered Plans | Sorcery | | Target player mills two cards. Draw two cards. | Michael C. Hayes
Showstopper | Instant | | Until end of turn, creatures you control gain "When this creature dies, it deals 2 damage to target creature an opponent controls." | Steve Prescott
Gaze of Granite | Sorcery | | Destroy each nonland permanent with mana value X or less. | Nils Hamm
Putrefy | Instant | | Destroy target artifact or creature. It can't be regenerated. | Igor Kieryluk
Varolz, the Scar-Striped | Legendary Creature | Troll Warrior | Each creature card in your graveyard has scavenge. The scavenge cost is equal to its mana cost. (Exile a creature card from your graveyard and pay its mana cost: Put a number of +1/+1 counters equal to that card's power on target creature. Scavenge only as a sorcery.)
Sacrifice another creature: Regenerate Varolz, the Scar-Striped. | Adam Paquette