A 6th-level Life Domain cleric has the following gets the Disciple of Life feature at 1st level:
Also starting at 1st level, your healing spells are more effective. Whenever you use a spell of 1st level or higher to restore hit points to a creature, the creature regains additional hit points equal to 2 + the spell’s level.
And the Blessed Healer feature at 6th level:
Beginning at 6th level, the healing spells you cast on others heal you as well. When you cast a spell of 1st level or higher that restores hit points to a creature other than you, you regain hit points equal to 2 + the spell’s level.
Suppose I, a life cleric with a Wisdom modifier of +3, cast Mass Healing Word at 3rd level, which heals 1d4+3 hit points to multiple creatures. If I include both myself and another creature as targets of the spell, how many hit points would I heal? Would I gain the benefits from both Disciple of Life and Blessed Healer?
Best Answer
Yes, the benefits would stack.
You would gain benefits from both effects.
Disciple of Life gives bonus HP to the creature you heal, which can include yourself as you are a creature, the same as any of your party members.
Blessed Healer gives the Cleric HP if a creature other than the Cleric is healed, which in the example given is indeed the case.
Therefore, your mass healing word spell would cause creatures other than you to regain 1d4 + 3 + 5 HP, and cause you to regain 1d4 + 3 + 10 HP.