The First Sliver [Modern Horizons] Manticore Your opponents can't cast spells

Your opponents can't cast spells during your turn

Set: Portal Three Kingdoms Type: Sorcery Rarity: Rare Cost: {2}{G} Target creature gets +2/+2 and gains horsemanship

Set: Urza's Saga Type: Enchantment Rarity: Rare Cost: {3}{R} {R}: You may put a creature card from your hand onto the battlefield

and Dominaria itself to the point of annihilation

The First Sliver [Modern Horizons] Manticore Your opponents can't cast spellsSet: Modern Horizons Type: Legendary Creature Sliver Rarity: Mythic Cost: {W}{U}{B}{R}{G} Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.) Sliver spells you cast have cascade.