Kroxa Recursion Hellbent (EDH / Commander)

This deck emphasize on recurring the ETB discard effect of Kroxa in early game, forcing opponents into Hellbent as early as possible.

Early game:
If Entomb, Dark Ritual and Exhume is in your hand. Keep it and attempt to Exhume Sire of Insanity on T1. Otherwise, the early game plan should be using Draw/Discard effects such as Faithless Looting to build up your graveyard pile and dig deep into library for set up pieces (mana rocks, Waste Not, Reanimation, etc).

Chainer, Phyrexian Reclamation, Raise Dead, Unearth and Claim/Fame are cheap recursion cards that allows you to fetch Kroxa from graveyard back into your hand or battlefield. Kroxa only cost RB, so make use of these recursion to cause as much hand discard as possible.

Mid game to Late game:
Several of your hand discard stax pieces should be up by now. At this stage, your priority should be setting up Worldgorger Dragon combo to generate infinite mana to re-cast Kroxa infinitely for the win or using Torment of Hellfire to win. You should have REB/PyroB and Imp's Mischief to protect your pieces.

Should you feel it is too risky, you can opt for Mikaeous + Carrion Feeder (or Altar of Dementia) + Murderous Redcap for infinite ETB damage. With Underworld Breach and reanimation spells, it should be easy to grab those pieces.

Sideboard
You can replace Ricohet Trap and Imp's Mischef with Thoughtsieze and Inquisition of Kozilek which can much more useful in certain situation.