Tandem Vitality

Technological

This armor upgrade is purchased as a set of two, each of which is installed in a different suit of armor. A creature wearing armor equipped with tandem vitality can touch another creature also wearing armor with the same upgrade and take a standard action to attune the two creatures to each other. A tandem vitality upgrade can be attuned to only one other tandem vitality upgrade at a time. Once attuned, the two creatures become quantum entangled and can exchange their life force over vast distances. Once per day, a creature wearing armor with this upgrade can take a standard action to activate it, choose to take any amount of damage that doesn’t reduce the creature to 0 Hit Points, and then become staggered for 1 round. The creature to which they are attuned gains temporary Hit Points equal to half the damage taken.

In addition to the regular rules for armor upgrades, tandem upgrades function only if another ally possesses the same upgrade and both allies currently have the same tandem upgrade installed.