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Commanders
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Commander
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Karn, Silver Golem
Legendary Artifact Creature — Golem
Whenever Karn blocks or becomes blocked, it gets -4/+4 until end of turn. {1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.
Mana cost
5
Mana value
5
Printings
From
$7.62
EDHREC rank
#11763
Reserved list
Never reprinted
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Formats
Legacy
Legal
Vintage
Legal
Commander
Legal
Rulings
4 Oct 2004
The blocking ability triggers only once no matter how many blockers are declared.
1 Aug 2008
A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature.

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