Glowing Gaze

Skill details

Full: Target foe takes 5...41...50 fire damage. If that foe is on Fire, you gain 5 Energy plus 1 Energy for every 2 ranks of Energy Storage.

Concise: Deals 5...41...50 fire damage. You gain 5 Energy plus 1 Energy for every 2 ranks of Energy Storage if target foe is Burning.

Fire Magic	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21
Fire damage	5	8	11	14	17	20	23	26	29	32	35	38	41	44	47	50	53	56	59	62	65	68

Acquisition

The fire damage is done before the energy gain is figured out, so if used on a foe hexed with Mark of Rodgort, the energy gain will occur even if that foe wasn't Burning before you cast Glowing Gaze.
A good combination is to use Mark of Rodgort along with Searing Flames and Glowing Gaze; for energy management, consider bringing both Fire Attunement and Glyph of Lesser Energy.
Due to aftercast delay, chaining this skill with a skill that inflicts Burning generally requires a minimum Burning durations of 2 seconds.
With Elemental Attunement and Fire Attunement, using Immolate and Glowing Gaze will yield a net gain of 8 energy every 9 seconds.
Heroes will spam this skill with reckless abandon; consider either disabling this skill and manually using it, using Mark of Rodgort, or not bringing it on them at all.