Agent of Treachery [Core Set 2020 Prerelease Promos] SV78 {5}: Create a 1/1 colorless

{5}: Create a 1/1 colorless Myr artifact creature token

Whenever another Spirit enters the battlefield under your control

T: Add W or U to your mana pool

{T}: Add an amount of {G} equal to Marwyn's power

) All Beast-Warrior-Type monsters you control gain 300 ATK

Agent of Treachery [Core Set 2020 Prerelease Promos] SV78 {5}: Create a 1/1 colorlessSet: Core Set 2020 Prerelease Promos Type: Creature Human Rogue Rarity: Rare Cost: {5}{U}{U} When Agent of Treachery enters the battlefield, gain control of target permanent. At the beginning of your end step, if you control three or more permanents you don't own, draw three cards. "The more secrets you have, the more easily you become my pawn."