Shatter the Source is a Magic: The Gathering card, a common red instant from March of the Machine (MOM), an expansion set released in April 2023. It is collector number 164 in that set, with art by Artur Nakhodkin. It costs {5}{R} (five generic and one red mana) to cast, for a mana value of 6. Its colour identity is red. It is legal in Pioneer, Modern, Legacy, Vintage, Pauper, Commander, Duel Commander, Oathbreaker, Pauper Commander, Brawl, Historic, Timeless and Gladiator. March of the Machine is its only printing so far. The latest aggregated market price for this printing is $0.23 (normal finish, as of 2026-11-12).
Card text
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Choose one -
• Shatter the Source deals 6 damage to target creature, planeswalker, or battle.
• Destroy target artifact.
Market price
Latest aggregated market price for the normal finish of this printing: $0.23 (as of 2026-11-12).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Shatter the Source by format. Formats in which it is not legal are not listed.
Six official rulings apply to Shatter the Source, newest first.
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.
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.
Because convoke isn't an alternative cost, it can be used in conjunction with alternative costs.
Tapping an untapped creature that's attacking or blocking to convoke a spell won't cause that creature to stop attacking or blocking.
Tapping a multicolored creature using convoke will pay for {1} or one mana of your choice of any of that creature's colors.
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.
Similar cards
Other instant cards with a red colour identity, ranked by how often they appear in Commander decks.