This tallent casting ulty in enemy heroes even if they have linken (no cast animation) just ulty work when bash proc - 3 skill charged. So you can charge 3 attacks and 4th attack use after dager and enemy hero will be affected by ur ultymate and get minus armour - plus will be good with other tallent - that ultymate can not be dispelled on 25 level tallent.

Fot this hero when u jump, you need nonstop attack to make charges on basher if this position carry slardar. But when you jump and use ulty, its take time for cast animation and enemy hero just run.