DOOM can be pressed at enemy with invincibility, without effect being appied.
DOOM can be pressed at enemy that aldeary died. If enemy will respawn in DOOM duration he will has an effect of it. The same is right for enemies killed by DOOM effect first tick.
Both situations works if you started DOOM spell animation and then enemy died/turned invincible.
Ability name
DOOM
Description
DOOM can be pressed at enemy with invincibility, without effect being appied. DOOM can be pressed at enemy that aldeary died. If enemy will respawn in DOOM duration he will has an effect of it. The same is right for enemies killed by DOOM effect first tick. Both situations works if you started DOOM spell animation and then enemy died/turned invincible.
Example Match ID (and possibly Timestamp)
.