Epic Boons

A quick rundown on recommended epic boons for your characters.
NOTE: I have highlighted in green the choice I think would work best, but let me know if you want a different one!

For Anyone

These could work for any of you:

Boon of Fortitude - your hit point max increases by 40.

Boon of Recovery - Once per long rest, you can use a bonus action to regain up to half your hit point total. Whereas Boon of Fortitude above raises your hp max straight up, this is basically a 1.5x boost to your hp max (which is way more than 40 for some of you) provided you get a turn before you get to zero and can use the ability.

Boon of Magic Resistance - you have advantage on saving throws against spells and other magical effects

Boon of Truesight - you gain truesight out to a distance of 60 feet. Truesight lets you see in magical and nonmagical darkness, see any invisible creatures, see through any illusion magic instantly, and see into the ethereal plane (a border plane where some creatures exist but can't interact with material).

Aza

Boon of Recovery - Once per long rest, you can use a bonus action to regain up to half your hit point total. Whereas Boon of Fortitude above raises your hp max straight up, this is basically a 1.5x boost to your hp max (which is way more than 40 for some of you) provided you get a turn before you get to zero and can use the ability.

Boon of Fortitude - increase HP max by 40.

Boon of Irresistible Offense - You can bypass the damage resistance of any creature.

Boon of Resilience - You gain resistance to all bludgeoning, piercing, and slashing damage.

Re'lon

Boon of High Magic - You gain an additional 9th level spell slot.

Boon of Quick Casting - Any spell of 1st through 3rd level that has a casting time of 1 action instead has a casting time of 1 bonus action for you.

Boon of Spell Mastery - Choose one spell of 1st through 3rd level. You can now cast it at its lowest level without using any spell slots.

Boon of Concentration - You gain advantage on rolls to maintain concentration on a spell; additionally, you can concentrate on two spells at once. Whenever you must make a check to maintain concentration, you must do so for both spells.

Denni

Boon of Concentration - You gain advantage on rolls to maintain concentration on a spell; additionally, you can concentrate on two spells at once. Whenever you must make a check to maintain concentration, you must do so for both spells.

Boon of High Magic - You gain an additional 9th level spell slot.

Boon of Spell Mastery - Choose one spell of 1st through 3rd level. You can now cast it at its lowest level without using any spell slots.

Hazel

Boon of Skill Proficiency - you gain proficiency in all skills (best for you since with reliable talent, you can basically never roll below a 16 again on any skill check).

Boon of Speed - Your walking speed increases by 30 feet. Pretty cool, but only affects your walking speed.

Boon of Undetectability - You gain a +10 bonus to stealth checks (lol the lowest you could ever get on a stealth check would be a 37) and you can't be detected or targeted by divination magic, including scrying sensors. Pretty good, but you are already pretty stealthy and have the ring of mind shielding soooo.