Tel, Demonic Traitor

Partner with Kiroptera, Angelic Pariah
Flying, Deathtouch
Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. They remain paired for as long as you control both of them.)
As long as Tel, Demonic Traitor is paired with another creature, both creatures have {t}: You gain life equal to the number of paired creatures you control.