Devoiden

You prepared this spell through spending 24 hours studying an sacrificing 50,000 GP worth of onyx.

You touch a creature, that creature takes 50d10 necrotic damage, is blinded and deafend, and takes an additonal 10d6 necrotic damage each turn for 10 rounds.

You can gain 9 exhaustion points to make this spell deal damage no matter what, even if they have legendary resilience.