Karrthus, Tyrant of Jund

Legendary Creature — Dragon    (CMC:7)

Flying, haste When Karrthus, Tyrant of Jund enters the battlefield, gain control of all Dragons, then untap all Dragons. Other Dragon creatures you control have haste.

7 CM1 ★ ENDave Kendall

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Legal in: Modern,Shards of Alara Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Classic,Singleton 100,Commander

Oracle Text (click to copy):

Karrthus, Tyrant of Jund {4}{B}{R}{G} Legendary Creature — Dragon Flying, haste When Karrthus, Tyrant of Jund enters the battlefield, gain control of all Dragons, then untap all Dragons. Other Dragon creatures you control have haste. 7/7

5/1/2009
The triggered ability's control-change effect has no duration. Each Dragon you gain control of this way will remain under your control until the game ends, that permanent leaves the battlefield, or some other effect changes its controller.
5/1/2009
When the triggered ability resolves, you'll gain control of all Dragons, including the Dragons you already control (such as Karrthus itself). Usually this will have no appreciable effect, though it will override any previous control-change abilities (such as if you had gained control of one of those Dragons only for the rest of the turn). Then you'll untap all Dragons, including the ones you already controlled and Karrthus itself (if it had somehow managed to become tapped by then).

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