Flame Orb, Heretic E2M7

Flame Orbs are the small ammo type used to power Heretic's Phoenix Rod. They provide the player with different amounds of ammo depending on their source. Pre-existing Flame Orbs only provide 1 shot, while those dropped by Ophidians provide 5 shots, and if a Maulotaur drops one on death, it's worth 10 shots, same as the Inferno Orb.

Heretic ammo
Wand Crystal Ethereal Arrows Claw Orb Lesser Runes Flame Orb Mace Spheres
Crystal Geode Quiver of Ethereal Arrows Energy Orb Greater Runes Inferno Orb Pile of Mace Spheres