The First Sliver [Modern Horizons] Masters 25 If a land is tapped

If a land is tapped for mana

gain control of target creature or planeswalker for as long as you control Dragonlord Silumgar

then transform it

Tawnos brings a childlike wonder and an inherent skill to Urza's studio and bridges the wizardry of the workshop with the grandeur of the royal court

Urza was stunned to find that common silver passed through the portal undamaged

The First Sliver [Modern Horizons] Masters 25 If a land is tappedSet: 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.