Flounder (5e Spell)
From D&D Wiki
|Casting time:||1 bonus action|
|Components:||S, M (a sheet of paper or parchment)|
|Duration:||Up to 1 minute|
You retroactively imbue a target creature with rejuvenating energy for up to 1 minute. During this time, if the target creature would be put below 1 hit point, they instead get put to 1 hit point, and consume this energy, healing them for 10d6 hit points. If the target isn't reduced below 1 hit point for the full duration, the spell ends, healing them for half as many hit points instead.
At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, the heal amount is increased to 15d6 hit points instead.