Now because Blue Lanterns are healers and power boosters, 
I’m thinking special ability will be a shockwave boost of those abilities. 
Like power boosting of green lanterns batteries is automatic, it’s mentioned a lot within the comics, 
and we talked about efficiency range before. 
However special ability like an ultimate would be  Adara appears and a wave is sent out that removes negative potion effects from all nearby designated allies, 
and applies small regen. 
Or something more conservative rather than an ultimate would be choosing one person to aim at to remove negative potion effects along with defensive 
buffs rather than outright regen or strength since being near Green Lanterns would already provide strength buffs

Also maybe we could find a way to incorporate like symbiotes that in comics the 
Blue Lantern corp is the only corp in which the corp chooses the lantern and you have to pass a test to be granted a ring. 
The ring does not choose the lantern.

A way to balance that ultimate is that you have to place your lantern down on the ground and utilize it as a tool in which you drain your 
entire battery for a duration. 
I also think with the laser we could incorporate that if a green lantern is nearby you have the ability to 
increase the power of your laser costing some sort of multiplier more energy to use.

Question, did you incorporate the lanterns ability to put their battery in a pocket dimension? I know Alan Scott can’t do that since he’s a different type. 
But Hal and the rest of the lanterns did develop that


Constructs
Bandage - Heals others --
Spear --
Fist --
Knockback Wave
Axe
Pickaxe

Shield --

Special Ability - Willpower Boost + Regeneration to Willpower Users, Range Boost with Levels
Drains half Ring Power