The Goal of All Life is Death

You utter a phrase of dark power outstretching your arms to the sky and as you do so, an arcane clock of dark energy that measures 10ft in diameter hovering 5ft above the ground appears behind you that ticks down from the beginning 1st toll to the final 12th toll. The user must concentrate this spell and so if the user is attacked they must succeed a concentration check to continue the channel. If the spell is not interrupted and the large clock hand reaches from the 1st to the 12th tick, the clock bell chimes. All creatures of your choice that you can see within 120 feet of you must suffer instant death with their very being erased. This spell ignores most types of resistances and immunities to death (Immortality, regeneration ect) and doesn't affect constructs or the undead. This spell cannot be dispelled or countered beyond its initial casting. Only Divine intervention or the very conceptual Gods can counter this spell after it is about to be cast. This spell can only be cast once every 3 months. The spell is not consumed/used unless the effect goes off.