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
                
                        
                    Campaign of Vengeance | Enchantment |  | Whenever a creature you control attacks, defending player loses 1 life and you gain 1 life. | Igor Kieryluk
                
                        
                    Ride Down | Instant |  | Destroy target blocking creature. Creatures that were blocked by that creature this combat gain trample until end of turn. | David Gaillet
                
                        
                    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
                
                        
                    Gisa and Geralf | Legendary Creature | Human Wizard | When Gisa and Geralf enters the battlefield, mill four cards.
During each of your turns, you may cast a Zombie creature spell from your graveyard. | Karla Ortiz
                
                        
                    Mercurial Geists | Creature | Spirit | Flying
Whenever you cast an instant or sorcery spell, Mercurial Geists gets +3/+0 until end of turn. | Lake Hurwitz
                
                        
                    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
                
                        
                    Grim Flayer | Creature | Human Warrior | Trample
Whenever Grim Flayer deals combat damage to a player, surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
Delirium — Grim Flayer gets +2/+2 as long as there are four or more card types among cards in your graveyard. | Mathias Kollros
                
                        
                    Mournwillow | Creature | Plant Skeleton | Haste
Delirium — When Mournwillow enters the battlefield, if there are four or more card types among cards in your graveyard, creatures with power 2 or less can't block this turn. | Jeff Simpson
                
                        
                    Ulrich of the Krallenhorde | Legendary Creature | Human Werewolf | Whenever this creature enters the battlefield or transforms into Ulrich of the Krallenhorde, target creature gets +4/+4 until end of turn.
At the beginning of each upkeep, if no spells were cast last turn, transform Ulrich of the Krallenhorde. | Slawomir Maniak
                
                        
                    Tamiyo, Field Researcher | Legendary Planeswalker | Tamiyo | +1: Choose up to two target creatures. Until your next turn, whenever either of those creatures deals combat damage, you draw a card.
−2: Tap up to two target nonland permanents. They don't untap during their controller's next untap step.
−7: Draw three cards. You get an emblem with "You may cast spells from your hand without paying their mana costs." | Tianhua X