Haven't tested if this is always the case but I cast "Ray of Frost" on one of the first three intellect devourers after you meet Shadowheart while it was up on the "ledge". It fell prone on the ice slick and i went to push it down from the ledge and I got the "indicator line" showing me where it would land if I pushed it. The success chance was 0% however and when I tried to push it I got the "show animation" but as expected nothing happened.
While writing this I realize I tried the showing with my Wizard and it might be that his strength was simply to low or something like that. Would be nice to have that indicated in some way like "your strength is to low" instead of 0%
