“Remember the Light”

Activation. As an action, or as a reaction when you or a creature you can see within 30 ft. would be reduced to 0 hit points.

Effect. You crush the ghost-pale blossom. Daylight light flares in a 30-ft-radius sphere (bright light; dim for 30 ft. beyond) for 1 minute. Magical darkness is dispelled in the area (as daylight), and the scent of fresh bread and new-cut wood fills the air while a soft lullaby hums.

Immediately when the light blooms:

• Lift Them Up. Each ally you choose in the light regains 3d8 + 7 hit points. Any ally at 0 HP instead stands with 1 HP and ends the dying condition.

• Steady Their Hearts. Each affected ally can immediately end one of the following they’re suffering: frightened, charmed, or possessed by an undead.
  (If an effect allows a save each round instead, the ally makes one now with advantage.)

• Mercy Against the Grave. For the light’s duration, allies in it have resistance to necrotic damage, advantage on death saving throws, and advantage on Wisdom saving throws against undead abilities.

• Turn the Cruel. Each undead in the light must make a DC 15 Wisdom save. On a failure, it is Turned for 1 minute. On a success, it has disadvantage on attack rolls against creatures in the light until the end of its next turn.

• Rest for the Fallen. Corpses and remains in the light can’t be animated for 24 hours.

(Optional) If two or three flowers are used in the same round

• Two: The healing becomes 4d8 + 10, and the Turn DC becomes 16.

• Three: In addition to the above, choose one creature that died within the last minute in the light; it returns to life at 1 HP (no missing body parts, no penalties), as Adeline’s mercy reaches them.