Bankrupt In Blood

You chose a creature within range to make a constitution saving throw. On a failed save, you start ripping the blood from the creature and transfigure it into the chalice; Dealing 4d12 Necrotic damage. If this damage would cause the creature to fall to 0 hit points they are instantly turned into a pile of gold coins equal to their age in years 

at higher levels: you may cast this spell using a spell slot of 6th level or higher, it gains 1d12 for each level above 5th level.