Altar of the Brood [Ugin's Fate] Modern Masters 2015 and that player can't activate

and that player can't activate abilities that aren't mana abilities

Set: Friday Night Magic 2000 Type: Instant Rarity: Rare Cost: {1}{B} Destroy target nonartifact

Set: Invasion Type: Sorcery Rarity: Rare Cost: {1}{B} Separate all creatures target player controls into two piles

Tawnos learned quickly from Urza that utter simplicity often led to wondrous

−3: Target opponent's life total becomes 10

Altar of the Brood [Ugin's Fate] Modern Masters 2015 and that player can't activateSet: Ugin's Fate Type: Artifact Rarity: Rare Cost: {1} Whenever another permanent enters the battlefield under your control, each opponent mills a card. Supplicants offer flesh and silver, flowers and blood. The altar takes what it will, eyes gleaming with unspoken promises.