Altar of Dementia [Modern Horizons] Whale return it to the battlefield

return it to the battlefield under its owner's control with a -1/-1 counter on it

I didn't mean this

Set: Beta Edition Type: Instant Rarity: Uncommon Cost: {B} As an additional cost to cast this spell

Set: Guilds of Ravnica Guild Kit Type: Legendary Creature — Angel Rarity: Mythic Cost: {2}{R}{R}{W}{W} Flying

Set: Magic Player Rewards 2006 Type: Instant Rarity: Rare Cost: {R}{W} Lightning Helix deals 3 damage to any target and you gain 3 life

Altar of Dementia [Modern Horizons] Whale return it to the battlefieldSet: Modern Horizons Type: Artifact Rarity: Rare Cost: {2} Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power. "It is not that you will go mad. It is that you will beg for madness." Volrath