Sorcery
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If you cast a spell for its cleave cost, that spell doesn't have any of the text in square brackets while it's on the stack.
A cleave cost is an alternative cost that's paid instead of the spell's mana cost. Casting a spell for its cleave cost doesn't change the spell's mana value.
You can't cast a spell for both its cleave cost and another alternative cost. For example, if an effect gives an Alchemist's Retrieval in your graveyard a flashback cost of 
, you can't cast it from your graveyard for its cleave cost.
If an effect allows you to “cast a spell without paying its mana cost,” you can't cast that spell for its cleave cost.
(You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)