
Spell Queller | Creature | Spirit | Flash
Flying
When Spell Queller enters the battlefield, exile target spell with mana value 4 or less.
When Spell Queller leaves the battlefield, the exiled card's owner may cast that card without paying its mana cost. | Adam Paquette

Heron's Grace Champion | Creature | Human Knight | Flash
Lifelink
When Heron's Grace Champion enters the battlefield, other Humans you control get +1/+1 and gain lifelink until end of turn. | Todd Lockwood

Bloodhall Priest | Creature | Vampire Cleric | Whenever Bloodhall Priest enters the battlefield or attacks, if you have no cards in hand, Bloodhall Priest deals 2 damage to any target.
Madness {1}{B}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) | Mark Winters