
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

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