Share Through the Worldmind: Friendly characters with the Nova Corps keyword can use Super Senses, if they can't already, but only succeed on a roll of 6. Once per turn, give an adjacent friendly character with the Nova Corps keyword a power action and you may reroll an attack roll made by Nova Corps Denarian later this turn.

If I have multiple Nova Corps Denarians on my team, can I give one adjacent character a power action to activate this version of Share Through the Worldmind and then later reroll all the attack rolls of the different Denarians?
No. You would be able to reroll the attack roll of THIS particular Denarian, since you are using its trait. But if you want to be able to reroll the attacks of other Denarians, you'd have to activate THEIR traits, too, with other power actions given to other adjacent characters.