Myrel, Shield of Argive [The Brothers' War Prerelease Promos] March of the Machine Prerelease Promos Sacrifice The World Tree: Search

Sacrifice The World Tree: Search your library for any number of God cards

and has "Whenever a player casts a spell or a creature attacks

Unclaimed Cat has lifelink

and Phyrexia: All Will be One are Argentum expansions

Set: Secret Lair Showdown Type: Creature — Rat Rarity: Rare Cost: {1}{B}{B} Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats

Myrel, Shield of Argive [The Brothers' War Prerelease Promos] March of the Machine Prerelease Promos Sacrifice The World Tree: SearchSet: The Brothers' War Prerelease Promos Type: Legendary Creature Human Soldier Rarity: Mythic Cost: {3}{W} During your turn, your opponents can't cast spells or activate abilities of artifacts, creatures, or enchantments. Whenever Myrel, Shield of Argive attacks, create X 1 1 colorless Soldier artifact creature tokens, where X is the number of Soldiers you control.