Melf's Minute Meteors is a Daily power available to Wizards at 9th level[HotEC]
Melf's Minute Meteors
Wizard Attack 9
Tiny balls of fire wink into existence around your head, awaiting your command to streak toward a foe and detonate.
Daily ✦ arcane, evocation, fire
Personal
Effect: Five fiery globes appear in the air around your head and hover there until they are expended or until the end of the encounter. While at least one globe remains, you can use the secondary power once per round, and any adjacent enemy that hits you with an attack takes 3 fire damage for each globe remaining.
Secondary Power (Arcane, Evocation, Fire, Implement)
Minor Action Ranged 20 Attack: Intelligence vs. Reflex
Hit:2d4 + Intelligence modifier fire damage, and ongoing 5 fire damage (save ends). If the target is already taking ongoing fire damage, that damage increases by 5. One globe is expended.