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Rulings
If there's a cost associated with having a creature block and you choose for that creature to block, its controller can choose to pay that cost or not. If that player decides to not pay that cost, you must propose a new set of blocking creatures.
You can decide that a creature won't block.
All blocking declarations must still be legal.
You can decide that a creature won't block.
All blocking declarations must still be legal.
Rulings
If there's a cost associated with having a creature block and you choose for that creature to block, its controller can choose to pay that cost or not. If that player decides to not pay that cost, you must propose a new set of blocking creatures.
You can decide that a creature won't block.
All blocking declarations must still be legal.
You can decide that a creature won't block.
All blocking declarations must still be legal.
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