Bind to flesh

The caster applies mud, dirt, sand, gravel, ash to a open wound. The creature is regains hit points equal to 2d6 + your Spellcasting ability modifier. This spell does not effect nonliving constructs and undead.

At higher levels: at higher levels this spell heals for a additional 1d6. If casted as a level 4 spell or higher the target regenerates 1d4 + your Spellcasting ability modifier for  1d4 turns. 

If casted while the regeneration is in effect the regeneration does not add on. It will either switch to become the amount of the new spell slot burned or stay the same if the spell slot burned is lower than the current amount of turns left.