K'rrik: Life Gain, Vampires and Demons (EDH / Commander)

This deck is built to take advantage of K'rrik's phyrexian mana ability. To support that, the deck has a lot of life link/life gain cards to fill up the health tank, which should let us cast a lot of spells quickly.

The deck has the usual life gain win cons: Vampires, Aetherflux Reservoir, Sanguine Bond and Defiant Bloodlord being the biggest threats. But I also added a few interesting ways to use K'rrik and all that life in ways your opponents may not see coming.

One option is to get demons into play and then win with Liliana's Contract. There is a lot of card draw to help us find demons and Liliana's Contract and K'rrik should allow us to play those demons much faster than usual by paying life. Vedalken Orrery and Emergence Zone should let us get our cards out right before our upkeep, to make it a lot harder for other players to disrupt our plans - possibly even getting four demons and Liliana's Contract out all at once for an instant win. If your demons end up in the graveyard, no big deal. There's plenty of recursion and, with a lot of life, you could use Command the Dreadhorde to put them all on the battlefield at once and win right there.

The other big win con is to use Ashnod's alter to make tons of mana by repeatedly casting and re-sacrificing cards like Reassembling Skeleton, Oathsworn Vampire and Bloodsoaked Champion. K'rrik allows you to cast them for less mana than you'll receive from Ashnod's alter, then you can use all of that mana to cast big spells like Exsanguinate, Torment of Hailfire, Profane Command and Bond of Agony.