The First Sliver [Modern Horizons] Scarlet and Violet 8 Whenever Scourge of the Throne

Whenever Scourge of the Throne attacks for the first time each turn

then you can destroy cards on the field up to the number of "Lightsworn" cards sent to the Graveyard by this effect

your next attack this turn gains +1 [Power]

[-10]: Gain control of all commanders

It's a matter of strength

The First Sliver [Modern Horizons] Scarlet and Violet 8 Whenever Scourge of the ThroneSet: 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.