Altar of Dementia [Modern Horizons] Satyr creatures can't attack you until

creatures can't attack you until a player planeswalks

Set: Antiquities Type: Artifact Creature — Construct Rare Cost: {6} Flying Tetravus enters the battlefield with three +1/+1 counters on it

where X is the number of Islands target opponent controls

Set: Mirrodin Type: Artifact Rare Cost: {X}{X} Chalice of the Void enters the battlefield with X charge counters on it

Altar of Dementia [Modern Horizons] Satyr creatures can't attack you untilSet: 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