Extreme Wish (5e Spell)
From D&D Wiki
|Casting time:||4 hours|
|Components:||V, S, M (A dead Mythic Wyrm Prismatic Dragons and its blood mixed up with a drop of blood from an over deity and the powdered scales of Tiamat all of which the spell consumes)|
While pouring the blood mix over the dead dragon you say a few words of power. Whatever you wish becomes reality. After casting this spell all magic in the multiverse disappears for 1d6 decades and all casters loose 10d6 hit points.