Radiant Absorption (5e Spell)
From D&D Wiki
|Casting time:||1 action|
|Duration:||Concentration, up to 1 minute|
You raise your hands to the sky, as you begin to absorb the positive energy surrounding everything. You regain hitpoints equal to your casting modifier. On following turns while the spell is still active, you can take another action to regain these hitpoints again. The hitpoints gained increase by 2 while in bright light, 1 while in dim light, by -2 while in darkness, and -50 while in the negative energy plane.