Sword of Forge and Frontier [Phyrexia: All Will Be One Prerelease Promos] Sliver Mutant Shatterskull Smashing deals twice X

Shatterskull Smashing deals twice X damage divided as you choose among them instead

I'd be terrified

Set: Legends Type: Creature — Kobold Soldier Rarity: Uncommon Cost: {1}{R} Other Kobold creatures you control get +0/+1 and have trample

Set: Legions Type: Creature — Sliver Rarity: Rare Cost: {3}{R} All Slivers have "{T}: Target Sliver creature gets +X/+0 until end of turn

Sword of Forge and Frontier [Phyrexia: All Will Be One Prerelease Promos] Sliver Mutant Shatterskull Smashing deals twice XSet: Phyrexia: All Will Be One Prerelease Promos Type: Artifact Equipment Rarity: Mythic Cost: {3} Equipped creature gets +2 +2 and has protection from red and from green. Whenever equipped creature deals combat damage to a player, exile the top two cards of your library. You may play those cards this turn. You may play an additional land this turn. Equip {2}