Corpse Cobble — ruling 1

You must still follow any timing restrictions and permissions, including those based on the card's type. For instance, you can cast a sorcery using flashback only when you could normally cast a sorcery.

Corpse Cobble — ruling 2

"Flashback [cost]" means "You may cast this card from your graveyard if the resulting spell is an instant or sorcery spell by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack."

Corpse Cobble — ruling 3

If a card with flashback is put into your graveyard during your turn, you can cast it if it's legal to do so before any other player can take any actions.

Corpse Cobble — ruling 4

You can cast a spell using flashback even if it was somehow put into your graveyard without having been cast.

Corpse Cobble — ruling 5

To determine the total cost of a spell, start with the mana cost or alternative cost (such as a flashback cost) you're paying, add any cost increases, then apply any cost reductions. The mana value of the spell is determined only by its mana cost, no matter what the total cost to cast the spell was.

Corpse Cobble — ruling 6

A spell cast using flashback will always be exiled afterward, whether it resolves, is countered, or leaves the stack in some other way.

Corpse Cobble — ruling 7

If you cast Corpse Cobble using flashback, you still pay its additional cost of sacrificing any number of creatures.

Corpse Cobble — ruling 8

You may choose to sacrifice no creatures to pay the additional cost. If you do, you'll create a 0/0 Zombie token. Unless something else is raising its toughness, the token will subsequently die, but any "enters the battlefield" or "dies" triggered abilities will still trigger.

Corpse Cobble : règles, fonctionnement et interactions (MTG)

Corpse Cobble is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

As an additional cost to cast this spell, sacrifice any number of creatures. Create an X/X blue and black Zombie creature token with menace, where X is the total power of the sacrificed creatures. Flashback (You may cast this card from your graveyard for its flashback cost and any additional costs. Then exile it.)

How it works : Corpse Cobble

Original English text — Wizards of the Coast / Scryfall

#1June 6, 2025· Wizards of the Coast
You must still follow any timing restrictions and permissions, including those based on the card's type. For instance, you can cast a sorcery using flashback only when you could normally cast a sorcery.
No other card is named in this ruling.
#2June 6, 2025· Wizards of the Coast
"Flashback [cost]" means "You may cast this card from your graveyard if the resulting spell is an instant or sorcery spell by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack."
No other card is named in this ruling.
#3June 6, 2025· Wizards of the Coast
If a card with flashback is put into your graveyard during your turn, you can cast it if it's legal to do so before any other player can take any actions.
No other card is named in this ruling.
#4June 6, 2025· Wizards of the Coast
You can cast a spell using flashback even if it was somehow put into your graveyard without having been cast.
No other card is named in this ruling.
#5June 6, 2025· Wizards of the Coast
To determine the total cost of a spell, start with the mana cost or alternative cost (such as a flashback cost) you're paying, add any cost increases, then apply any cost reductions. The mana value of the spell is determined only by its mana cost, no matter what the total cost to cast the spell was.
No other card is named in this ruling.
#6June 6, 2025· Wizards of the Coast
A spell cast using flashback will always be exiled afterward, whether it resolves, is countered, or leaves the stack in some other way.
No other card is named in this ruling.
#7September 24, 2021· Wizards of the Coast
If you cast Corpse Cobble using flashback, you still pay its additional cost of sacrificing any number of creatures.
No other card is named in this ruling.
#8September 24, 2021· Wizards of the Coast
You may choose to sacrifice no creatures to pay the additional cost. If you do, you'll create a 0/0 Zombie token. Unless something else is raising its toughness, the token will subsequently die, but any "enters the battlefield" or "dies" triggered abilities will still trigger.
Card named in this ruling
Zombie