Gift of the Amethyst Wrym

GavandinacKriinZii, The Amethyst Great Wrym bestows a modicum of his power onto you.

You gain a +1 to either your Intelligence, Wisdom, or Charisma scores, up to a maximum of 24.

You know the Pulse Wave spell, and can cast it once per day at your highest available spell level without expending a spell slot. The DC for this spell is determined by the attribute you chose to increase. When you use for daily free casting of Pulse Wave, treat your proficiency bonus as if it was a +8. For this casting, you spell Save DC is base 8 + 8 Proficiency + your modifier of the increased attribute. You may cast Pulse Wave again using your own spell slots and your own proficiency bonus.

Additionally, you may cast Sending, At Will, so long as the Target of Sending is the dragon that bestowed this power upon you.