Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for {1} or one mana of that creature's color.)
No paper market price
Chief Engineer from Magic Online Promos is a digital-only printing (MTG Arena or Magic Online). This printing has no physical card, so TCGplayer and Cardmarket paper prices do not apply.
Card data via Scryfall. This printing is digital-only (MTG Arena or Magic Online), so TCGplayer and Cardmarket paper prices do not apply. View on Scryfall · How Scryfall prices work . Gameplay data is refreshed from Scryfall on demand. Tappr is not a marketplace and does not sell cards. Page checked 2026-11-02 05:39 UTC.
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