If Portal Mage enters the battlefield during the declare attackers step, you may reselect the player or planeswalker that the target attacking creature attacks.
Illus. Yongjae Choi
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MYTHICSPOILER.COM THE CYCLICAL MTG SPOILER
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KHANS OF TARKIR 
COMMANDER 2014
FTV: ANNIHILATION 
SPEED vs CUNNING 
MAGIC 2015 
CONSPIRACY 
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