With a simple touch and casting of Den Siva's Immedicable, the magician's target is consumed with near irreversible destruction energy that hollows the target from the inside out.   In the first round, the target takes 20hp of phantom energy damage, permanently reduces their hit point maximum by 20hp and loses 2 from each ability score.   At the start of each subsequent magician's turn, the target automatically takes an additional 10hp of phantom energy damage, permanently reduces their hit point maximum by 10hp and loses 1 from each ability score. This continues until the hit point maximum is reduced to 0 hit points at which point the target fades away as a pile of ash adrift in space or the target escapes the spell's ever tightening consumption.   At the end of each subsequent magician's turn the target can attempt a constitution savings throw with disadvantage (the disadvantage can only be removed with a wish level or higher spell). After 3 successful savings throws, Den's Siva's Immedicable starts to dissipate, with the spell ending after it continues to take effect for an additional 3 rounds. The dissipation can be brought to a quicker end with the casting on the target of a Greater Restoration or other appropriate healing spell cast using a 7th level spell slot or higher.   Each long rest heals up to 30 hit point maximum and up to 3 for each ability score.