Hi,
Unlike other enemy-targeted spells like Spirit Plague (which never misses as long as you’re casting it in the vicinity of an enemy) Infernal Shade tends to miss quite a lot (as in, the spell is cast and the mana is spent, but it doesn’t stick to any enemy). For some reason, it is especially bad on the Abomination (and probably other big enemies), where at least half of the Shades fail to “stick” event when my cursor is right on it.
Shifting Doom also sometimes latch onto a dude quite far away, and sometimes fails to reattach to someone right besides the Shade, even at 100% chance. I suspect it’s because it actually attaches, but “misses”. This is especially apparent when taking Lingering Flames, at it will latch onto an enemy and disappear instantly.
Of course, this is when Hellfire isn’t taken.
On a sidenote, could this also be why Legion doesn’t work properly?
(Obviously, this is when the duration shouldn’t run out, Shade limit isn’t reached, or anything else that would make this behaviour normal).