You create an extradimensional pool of acid beneath your enemies' feet.

Encounter   ✦     Acid, Arcane, Evocation, Implement
Standard Action      Area burst 2 within 10

Target: Each creature in the burst

Attack: Intelligence vs. Fortitude

Hit: 1d8 + Intelligence modifier acid damage.

  Active Familiar: Any enemy hit by this attack must spend an extra square of movement to leave its square while within 3 squares of your familiar until the end of your next turn.

Update (10/18/2011)
Updated in Wizard Schools article.

Published in Dragon Magazine 382, page(s) 27.