Watery Double is a Encounter power available to Wizards at 6th level[HotEC]
Watery Double
Wizard Utility 6
Creating a duplicate of yourself from elemental water lets you cast spells from unexpected directions
Encounter ✦ arcane, conjuration
10
Effect: You conjure a watery double of yourself in an unoccupied square within range. The double occupies its space, and it lasts until the end of your next turn. Until the conjuration ends, you can use your space or the double's space as origin for your wizard attack powers.