Issue:
When two Einheri use horn blast with an interval, the buff applied to units is not refresh, and at the end of the first horn blast, the second horn blast is applied with the time elapsed.
Trigger Event:
Build multiple Einheri, use ability multiple time during blast horn duration.
Repro Steps:
1.Build two Einheri
2.Use blast horn with the first one
3. A second later use blast horn with the second