Midnight Arsonist
Creature — Vampire
Oracle Text
When this creature enters, destroy up to X target artifacts without mana abilities, where X is the number of Vampires you control.Rulings (1)
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Wizards of the CoastMidnight Arsonist's triggered ability can't target artifacts that have either activated or triggered mana abilities. An activated mana ability is one that could add mana as it resolves, doesn't have a target, and isn't a loyalty ability. A triggered mana ability is one that could add mana as it resolves and triggers based on an activated mana ability.