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Chief Engineer (86)

C16 · Commander 2016 · rare

Mana cost
Mana value	2.0
Type	Creature — Vedalken Artificer
Rarity	rare
Colors	U
Power / Toughness	1 / 3
EDHREC rank	7104

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.)

An eye for detail, a mind for numbers, a soul of clockwork.

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Magic Online Promos — Magic 2015 Promos — Magic 2015 $0.87 Commander 2016 $0.87

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Legality

Rulings

• 2014-07-18: Multiple instances of convoke on a single spell are redundant.
• 2024-01-12: Because convoke isn't an alternative cost, it can be used in conjunction with alternative costs.
• 2024-01-12: Tapping an untapped creature that's attacking or blocking to convoke a spell won't cause that creature to stop attacking or blocking.
• 2024-01-12: When calculating a spell's total cost, include any alternative costs, additional costs, or anything else that increases or reduces the cost to cast the spell. Convoke applies after the total cost is calculated. Convoke doesn't change a spell's mana cost or mana value.
• 2024-01-12: Tapping a multicolored creature using convoke will pay for {1} or one mana of your choice of any of that creature's colors.
• 2024-01-12: You can tap any untapped creature you control to convoke a spell, even one you haven't controlled continuously since the beginning of your most recent turn.
• 2024-01-12: If a creature you control has a mana ability with {T} in the cost, activating that ability while casting a spell with convoke will result in the creature being tapped before you pay the spell's costs. You won't be able to tap it again for convoke. Similarly, if you sacrifice a creature to activate a mana ability while casting a spell with convoke, that creature won't be on the battlefield when you pay the spell's costs, so you won't be able to tap it for convoke.

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