Borrowed Time converts all damage into healing when active, so bait enemies into bursting you while it is up.

Mist Coil heals allies at the cost of your HP, so use it to top off your carry and trigger Borrowed Time.

Aphotic Shield absorbs damage and dispels debuffs, so cast it on allies before they get locked down.

Aphotic Shield bursts for the damage it absorbed, so use it on yourself when diving to punish attackers.

Curse of Avernus slows enemies and speeds you up, so chase down targets after hitting them.

Abaddon is hard to kill, so frontline for your team and let your ult absorb the enemy burst.