Undead Spider(boss), Soothsayer (boss) and Viking' skill "Runic Power"

[ckdamascus]

Of note, you cannot re-use the same rage skills from the same "person" even if you do trigger the "re-usage rage" skill.

Olaf has his "power sweep" and "lord of the north" (and probably that icy wall thing).

Even if you get a "chance to re-use" rage, you can't do 2 power sweeps in a row (or even a lord of the north).

To make the most of it, you want to have the valkyries with rage skills as well so you can use their skills.

So you can do "power sweep", "christina's gift" in the same turn if you have enough rage.

That said, it is still worth upgrading it early game if you are a Viking/Warrior because it does increase your damage with rage skills as well.