Go for Azazel with this MTix 100% and then go for Frigg in the next one, imo
Titania works super well with Azazel, and Frigg is super OP for a healer, more so than Gaia depending on the enemy. (imo)
She has -20% Thunder ATK down and -20% Wind RST down
Affliction block / Crit rate up to all allies
1800 base heal for all allies.