This spell calls the brutal side of nature to increase a poison's potency. For the duration any one dose of poison that deals damage you cast this spell on deals additional 3d10 damage (Halved if the target makes it saving throw) the first time the target takes damage from the poison and the DC for the saving throw against the poison increases by a number equal to your Spellcasting ability modifier. 

If you cast this spell every day for 3 days on the same dose of poison the spell becomes permanent, the target has disadvantage on their saving throw against the poison and the material components are consumed on the last casting.