MTG Treachery

Identity — Traitor

Unveil {X} (Start the game with this identity face down in the command zone. Turn it face up any time for its unveil cost.)

When The Grenadier is unveiled, create X plus three colorless artifact tokens named Explosive.

{1}, Sacrifice a token named Explosive: Choose one —

• Destroy target nonland permanent.

• Target player loses 3 life.

Illustrated by Kekai @ CGHUB

Card ID: #23

The X in the unveiling triggered ability has the same value as the X paid in the Unveil ability. This is pretty easy to derive since there is no other source of X.