Flaming Sphere is a nice low-level wizard power, but even the errata text is a little confusing.
Daily ✦ Arcane, Conjuration, Fire, Implement
Standard Action Ranged 10
Effect: You conjure a Medium flaming sphere that occupies a
square within range, and the sphere attacks. 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 6 squares.
Target: One creature adjacent to the flaming sphere
Attack: Intelligence vs. Reflex
Hit: 2d6 + Intelligence modifier fire damage.
Sustain Minor: You can sustain this power until the end of the encounter. As a standard action, you can make an‑ other attack with the sphere
The attack is a ranged 10, but this is only for placing the sphere. Effect then says "and the sphere attacks." and Target says "One creature adjacent to the flaming sphere".
Is that attack a melee attack?
It's not really the original ranged attack that places the sphere, it's an attack that takes place after that.
If an enemy is prone, would that give the prone enemy a bonus to defense since the power says it's a ranged attack?
Or does the prone creature not receive a defensive bonus, because the conjured sphere is right next to the prone creature?