Combos Utilizing Tendrils-of-Agony

Have priest of gix in play with cloudstone curio in play, then play another priest to bounce the first priest back to your hand, continue an infinate amount of times cast Tendrils of agony.

they put things in play, you drain 2 life each time

one su-chi in graveyard, another in play. sac one to put other into play. use 4 mana to cast nightmare. infinite loop. cast tendrils to kill opponent

keep playing silver drake and returning it to your hand over and over again to boost the storm ability thing. infinite damage and infinite life gain!

one cathodion in graveyard, another in play. sac one to put other into play. use 3 mana to cast nightmare. infinite loop. cast tendrils to kill opponent

You most likely want to reanimate the Tyrant, then play Priest and bounce itself over and over for massive Tendrils. Cloud of Faeries + Brain Freeze as well.