Cavalier of Night [The List] War of the Spark Tokens for the moon is a

for the moon is a lie

Set: International Collectors' Edition Type: Instant Rarity: Uncommon Cost: {2}{U} Psionic Blast deals 4 damage to any target and 2 damage to you

Shatterskull Pass is a pretty distant second

return an instant or sorcery card at random from your graveyard to your hand

Set: Premium Deck Series: Slivers Type: Artifact Rarity: Rare Cost: {5} Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it

Cavalier of Night [The List] War of the Spark Tokens for the moon is aSet: The List Type: Creature Elemental Knight Rarity: Mythic Cost: {2}{B}{B}{B} Lifelink When Cavalier of Night enters the battlefield, you may sacrifice another creature. When you do, destroy target creature an opponent controls. When Cavalier of Night dies, return target creature card with mana value 3 or less from your graveyard to the battlefield.