Portal Mage [C20 - 122]

Flash
When Portal Mage enters the battlefield during the declare attackers step, you may reselect which player or planeswalker target attacking creature is attacking. (It can't attack its controller or its controller's planeswalkers.)

Rarity: Rare

#: 122

Card Type: Creature, Creature — Human Wizard

Card Color: U

Casting Cost: {2}{U}