Either nerf Umbral Glaive or release an AP equivalent.

45 second cooldown on that thing is way too short, it should at least be 1 minute. The 3 damage to wards/traps should be removed too, Senna already has an AA+Q animation reset+AA so this'll be a slap on the wrist. This item isn't much of a problem when the person you're playing against is behind, but when they're ahead they just clear an entire side of the map of all vision and replace your wards with theirs(zombie wards). This thing even discourages me from buying control wards because of how quickly they get deleted off the map. I get forced to back twice when people use this item because I'll get spam pinged when there are no wards on the map. I won't be surprised when pros rush it on every mid lane assassin because of how cheap it is.