Death Bloom

You rip and tear at a targets bones and sinew. The target must make a Constitution saving throw. The target takes 10d10 necrotic damage on a failed save, or half as much damage on a successful one.

A creature sized large or smaller killed by this spell becomes a spiderweb of bone and gore one size larger than the target. The target cannot be resurrected except via the spells true resurrection, wish, or equivalent effects.