Expansion // Explosion is a Magic: The Gathering card, a rare blue and red instant from Tarkir: Dragonstorm Commander (TDC), a Commander product released in April 2025. It is collector number 287 in that set, with art by Deruchenko Alexander. It costs {U/R}{U/R} to cast, for a mana value of 6. Its colour identity is blue and red. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, Duel Commander, Oathbreaker, Brawl, Historic, Timeless, Gladiator and Penny Dreadful. It has been printed in 5 sets, from Guilds of Ravnica (2018) to Tarkir: Dragonstorm Commander (2025). The latest aggregated market price for this printing is $0.28 (normal finish, as of 2026-10-23).
Card text
Copy target instant or sorcery spell with mana value 4 or less. You may choose new targets for the copy.
Market price
Latest aggregated market price for the normal finish of this printing: $0.28 (as of 2026-10-23).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Expansion // Explosion by format. Formats in which it is not legal are not listed.
Expansion // Explosion has been printed in 5 sets. The other printings are listed newest first, with the rarity and release year of each.
Printing
Rarity
Year
The List (PLST) #GRN-224
Rare
2024
Ravnica Remastered (RVR) #243
Rare
2024
Guilds of Ravnica (GRN) #224
Rare
2018
Guilds of Ravnica Promos (PGRN) #224p
Rare
2018
Guilds of Ravnica Promos (PGRN) #224s
Rare
2018
Official rulings
The 8 most recent official rulings for Expansion // Explosion, newest first.
If a spell has {X} in its mana cost, include the value chosen for that X when determining the mana value of that spell.
If one of Explosion's two targets becomes illegal, the other is affected as appropriate.
The controller of a copy can't choose to pay any alternative or additional costs for the copy. However, effects based on any alternative or additional costs that were paid for the original spell are copied as though those same costs were paid for the copy.
Any choices made as a spell resolves won't have been made yet once it's copied. Any such choices will be made separately as the copy resolves.
If the spell that's copied is modal (that is, it says "Choose one -" or the like), the copy will have the same mode or modes. You can't choose different ones.
Expansion can copy any instant or sorcery spell with an appropriate mana value, not just one with targets.
The copy will have the same targets as the spell it's copying unless you choose new ones. You may change any number of the targets, including all of them or none of them. If, for one of the targets, you can't choose a new legal target, then it remains unchanged (even if the current target is illegal).
If the spell that's copied has an X whose value was determined as it was cast (like Banefire does), the copy will have the same value of X.
Similar cards
Other instant cards with a blue and red colour identity, ranked by how often they appear in Commander decks.