Combustible Gearhulk
First strike
When this creature enters, target opponent may have you draw three cards. If the player doesn't, you mill three cards, then this creature deals damage to that player equal to the total mana value of those cards.
Illustrated by Daarken
This printing
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If any of the cards put into your graveyard have
in their mana cost, X is considered to be 0.While Combustible Gearhulk's triggered ability is resolving, no player may take any actions other than those specified by the Gearhulk. Once the opponent makes a choice, players can't cast spells or activate abilities until after the cards are drawn or put into the graveyard and damage has been dealt (if applicable).
If you have fewer than three cards in your library, the opponent may choose to have you draw three cards. If so, you'll lose the game as state-based actions are performed.
