Hold the Perimeter

(Start the game with this conspiracy face up in the command zone.) At the beginning of your first upkeep, create a 1/2 white Soldier creature token with defender. At the beginning of each other player's first upkeep, that player creates a 1/1 red Goblin creature token with "This token can't block."

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms661x2m02bqpq01uq9eyxvz.