Altar of Dementia [Modern Horizons] Commander's Arsenal Does them some good if

Does them some good if we smash every one so often

Set: Ninth Edition Type: Creature — Spirit Rarity: Rare Cost: {3}{G}{G} Untap all permanents you control during each other player's untap step

Set: Master Collection Volume 2 Card type: Effect Monster Rarity: Secret Rare Attack: 1600 Defense: 1000 When this card is Normal Summoned

Equipped creature gets +2/+0 and has indestructible

if a "Sinister Serpent" is in your Graveyard

Altar of Dementia [Modern Horizons] Commander's Arsenal Does them some good ifSet: 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