Day 1
Build 1 (Support)
If you go with Build One, you'll want to focus on increasing your mana and survivability as much as possible. Look for decent ranged spells to assist your team from a distance when you're not actively healing or supporting.
Also, be sure to either find a better healing incantation seal or upgrade your current one to improve your overall healing output per cast. And if you happen to come across
Black Flame
Discus Of Light
Stone Of Gurranq
Flame Sling and other small ranged spells or even
Wraith Calling Bell these can be solid ranged options to support without risking close combat with your lower HP pool.
Build 2 (Hybrid)
If you go with Build Two, you'll want to focus on increasing your mana and survivability as much as possible. Additionally, look for a solid ranged spell to support your team from a distance when you're not actively healing.
Day 2
Build 1 (Support)
Stick with your team as much as possible to provide consistent support and keep them alive. At the same time, look for opportunities to boost your mana, damage, and survivability, as well as to acquire more powerful incantations.
Build 2 (Hybrid)
Follow your team as much as possible to support them and just make sure to keep them alive while finding additional ways to increase your mana, damage, and survivability and if you intend to exclusively use
Wraith Calling Bell for damage make sure to scale up magic damage sources as it's the primary scaling damage for the
Wraith Calling Bell.
Also if you ever stumble across the rare weapon
Cipher Pata or
Coded Sword these are excellent melee options since they scale very well with revenant if you have to go to melee.
Day 3
Both Builds
Make sure to stay at a safe distance and prioritize keeping your teammates alive at all costs. Time your heals wisely and save your ultimate for crucial moments to maximize your team’s ability to revive and survive. While doing so, support with ranged attacks whenever possible to help finish the boss fight