You conjure a rolling ball of fire and control where it goes.

Daily   ✦     Arcane, Conjuration, Evocation, Fire, Implement
Standard Action      Ranged 10

Effect: You conjure a Medium flaming sphere in an unoccupied square within range. The sphere occupies its square, and it lasts until the end of your next turn. Any creature that starts its turn adjacent to the sphere takes 1d4 + Intelligence modifier fire damage. As a move action, you can move the sphere up to 6 squares.
    When the sphere appears, it immediately makes the following attack. While the sphere persists, you can use a standard action to command it to make the attack.

  Target: One creature adjacent to the flaming sphere

  Attack: Intelligence vs. Reflex

  Hit: 2d6 + Intelligence modifier fire damage.

Sustain Minor: The sphere persists until the end of your next turn.

Update (1/24/2012)
Updated in Class Compendium.

Published in Player's Handbook, page(s) 160, Class Compendium.