Succubus

[Pawnstar]

Hello i was in a 5's game 4 or them were friends and me being the fifth.
We were dominating the game so i guess they thought it would be cool to kill me 4 times with succubus's mezmerize and heart attack. Is this mechanic intentional? It counted as a death for me and a kill for him.

Im sure they had a blast at my expsense. As funny as they thought it was it wasnt to me. Not only that it was a cheap way to boost his k/d ratio and lower mine

[Stergeary]

The ability of Mesmerize to target allies is intentional. Although it will deal damage to the target ally, there are many situations in which casting it on an ally will save his or her life (one such scenario being that Arachna has cast her Ultimate on your ally). This same mechanical quirk was present in DotA, where Bane Elemental's Nightmare was among one of the few spells that was capable of targeting both ally and enemy. However, Heartache, being based on DotA's Brain Sap, was not capable of targeting allies, though it would have the advantage of allowing you to gain 300 health in the absence of an enemy unit. If you are implying that he casted Heartache on you to kill you, then that would be a bug, regardless of whether or not you were Mesmerized.