Flying Whenever a creature attacks you or a planeswalker you control, you may draw a card.
"I serve only justice. But through that duty, I serve all of Ravnica."
Official Rulings for Isperia, Supreme Judge
10/1/2012 : In a Two-Headed Giant game, Isperia's ability will trigger whenever a creature attacks your team or a planeswalker you control. It won't trigger when a creature attacks a planeswalker controlled by your teammate.
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