No Mercy (Borderless Alternate Art) [Dominaria Remastered] 063 Set: March of the Machine

Set: March of the Machine Commander Type: Creature — Unicorn Rarity: Uncommon Cost: {1}{G}{W} Whenever another creature enters the battlefield under your control

but I'm pretty sure this will work

Legendary creatures you control gain protection from each of that creature's colors until end of turn

Set: Sword & Shield: Fusion Strike Type: Fire Rarity: Secret Rare Retreat cost: Colorless

Sacrfiice Commander's Sphere: Draw a card

No Mercy (Borderless Alternate Art) [Dominaria Remastered] 063 Set: March of the MachineSet: Dominaria Remastered Type: Enchantment Rarity: Mythic Cost: {2}{B}{B} Whenever a creature deals damage to you, destroy it. "Leave no survivors. Let the other worlds see what befalls those who attempt to resist the might of Phyrexia." Sheoldred