Simple, give it an internal cooldown per player.
Right now engineers are quite disproportionately shafted, since flamethrowers and grenades, one of the few viable options in cases such as WvW, by your design I might add, are getting murdered by retaliation.
Why not change it so that you can only be hit by a single players retaliation every 1s or 2s.
Furthermore… change its icon please.
Its very similar to fury, I use elixir B, which when thrown can give me either of those. I sometimes miss or don’t get the audial cue, and its too hectic to see the visual one.
The boons look near identical .
Vibor Bauman- Level 80 Engineer- Gandara