According to the tooltip Imbune Weapon is supposed to refund resources if a light attack was not used before the buff ran out. And I noticed that it actually returns more than it uses. Is this intended?
In case people are wondering, this is how I tested it (only tested out of combat):
1. Drain magicka/stamina (depending on morph) and hold block (with an ice staff if magicka). This prevents passive regen from interfering with the test.
2. Note how much of the corresponding resource I have.
3. Cast skill and wait for the buff to run out while holding block throughout the whole test.
4. Compare resource number with the one in step 2.
After testing with unmorphed skill (rank 1) and 0 points in clairvoyance (on stam DK), and the magicka morph (rank 1) with 2 points in clairvoyance (on magplar), it seems that the skill returns 400-500 points more of the resource than it uses.
I doubt that it is intended, but if it is, this would be a massive amount of regen for non-dps roles. My tanks would love it.