Teferi's Puzzle Box (Foil Etched) [Secret Lair Drop Series] Manticore Sliver spells you cast have

Sliver spells you cast have cascade

perhaps in one of those boxes

Set: Portal Three Kingdoms Type: Legendary Creature — Human Soldier Rarity: Rare Cost: {4}{R} Horsemanship (This creature can't be blocked except by creatures with horsemanship

Set: Alpha Edition Type: Enchantment Rarity: Uncommon Cost: {2}{B} White spells cost {3} more to cast

For late in the game

Teferi's Puzzle Box (Foil Etched) [Secret Lair Drop Series] Manticore Sliver spells you cast haveSet: Secret Lair Drop Series Type: Artifact Rarity: Rare Cost: {4} At the beginning of each player's draw step, that player puts the cards in their hand on the bottom of their library in any order, then draws that many cards. !!!