A silver light flashes and an unseen pulse ripples through the air. Your foes aren't going anywhere.

Daily   ✦     Arcane, Zone
Standard Action      Area burst 3 within 20 squares

Effect: The burst creates a zone that lasts until the end of your next turn. Enemies within the zone cannot teleport, use teleportation powers, or benefit from phasing. Further, within the zone, magic portals fail to function and creatures cannot access other planes or extradimensional spaces.

Sustain Minor: The zone persists.

Published in Dragon Magazine 375, page(s) 14.