Monstrous Onslaught

Monstrous Onslaught card image

Monstrous Onslaught: Sorcery, Foundations Commander. MTG card printings, market prices, rulings, and format legality on Mana Grove.

Mana cost
{3}{G}{G}
Mana value
5
Type
Sorcery
Colour identity
Green (G)
Rarity
Uncommon
Set
Foundations Commander (FDC)
Released
2026-10-02
Collector number
217
Artist
Slawomir Maniak
Commander rank
14,014 (by how often it appears in Commander decks)

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About Monstrous Onslaught

Monstrous Onslaught is a Magic: The Gathering card, an uncommon green sorcery from Foundations Commander (FDC), released in October 2026. It is collector number 217 in that set, with art by Slawomir Maniak. It costs {3}{G}{G} (three generic and two green mana) to cast, for a mana value of 5. Its colour identity is green. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, Duel Commander, Oathbreaker, Brawl, Historic, Timeless and Gladiator. It has been printed in 4 sets, from Aether Revolt (2017) to Foundations Commander (2024). The latest aggregated market price for this printing is $0.20 (normal finish, as of 2026-11-12).

Card text

Monstrous Onslaught deals X damage divided as you choose among any number of target creatures, where X is the greatest power among creatures you control as you cast this spell.

"Regards from Peema." -Rishkar

Market price

Latest aggregated market price for the normal finish of this printing: $0.20 (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 Monstrous Onslaught by format. Formats in which it is not legal are not listed.

PioneerLegal
ModernLegal
LegacyLegal
VintageLegal
CommanderLegal
Duel CommanderLegal
OathbreakerLegal
BrawlLegal
HistoricLegal
TimelessLegal
GladiatorLegal

Other printings of Monstrous Onslaught

Monstrous Onslaught has been printed in 4 sets. The other printings are listed newest first, with the rarity and release year of each.

PrintingRarityYear
Commander Legends (CMR) #244Uncommon2020
Kaladesh Remastered (KLR) #169Uncommon2020
Aether Revolt (AER) #116Uncommon2017

Official rulings

Four official rulings apply to Monstrous Onslaught, newest first.

  • You divide the damage among the target creatures as you cast Monstrous Onslaught. Each target must be assigned at least 1 damage.
  • The value of X is determined at the time you divide damage. It won't change later, even if the greatest power among creatures you control changes.
  • If some of the targets become illegal, the original division of damage still applies. The damage that was divided among the illegal targets simply isn't dealt; it isn't re-assigned to remaining legal targets.
  • The damage is dealt by Monstrous Onslaught, not by the creature with the greatest power among creatures you control.

Similar cards

Other sorcery cards with a green colour identity, ranked by how often they appear in Commander decks.

In these precons

Monstrous Onslaught is in the decklist of these preconstructed Commander decks.

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