Wind Walk: Allows the Blademaster to become invisible(untargetable), and move faster(freedom) for a set amount of time(6 seconds). When the Blademaster attacks a unit to break invisibility, he will deal bonus damage.
Source: Warcraft 3 Blademaster abilities
Have it modify mortal strike so it requires and can be balanced around arms warrior specifically imo. I hope with later stages runes directly effect existing abilities rather than adding new ones.
So for example a warrior shoulder rune could be a modifier which converts mortal strike into windwalk, your first strike dealing increased damage and reducing the targets healing received. Even if it puts it on a 30s+ cooldown with all the other runes and such arms could end up having a more engaging and less ms/hs centric rotation to where it hardly notices the loss and windwalk becomes a niche pick that does sacrifice ms uptime for more subtle target swaps.
Bump for this. I always wanted to make a Blademaster.