Rank 1 Increases the damage done by your Entangling Roots spell by 25%, and its victims can take up to 25% more damage without interrupting the effect.
Rank 2 Increases the damage done by your Entangling Roots spell by 50%, and its victims can take up to 50% more damage without interrupting the effect.
Rank 3 Increases the damage done by your Entangling Roots spell by 75%, and its victims can take up to 75% more damage without interrupting the effect.