The Bane Cleaver

When The Bane Cleaver enters the battlefield,
exile any number of creatures that have different creature types until it leaves the battlefield.
Equipped creature gains +X/+X, where X equals
the number of different creature types among
cards exiled with The Bane Cleaver and
"Whenever a creature blocks or is blocked by this creature, if it does not share any types with
creatures exiled with The Bane Cleaver, exile it
until The Bane Cleaver leaves the battlefield."
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