Rejuvenator

Drops over the pit when the Mid-Boss dies. Heavy melee it to claim it for your team. For the next 3 minutes every teammate carries a respawn credit: die and you are back after 3 seconds at 100% health. The team's respawn timers drop to 50% and its troopers get 1.7x health; a second and third Rejuvenator take those to 40% and 30%, 2x and 2.3x.