K'rrik, Son of Yawgmoth PL9(?) (EDH / Commander)

Combo Lines
Fleshwrither Line
Needs K'rrik, Fleshwriter on the field, 2 Generic Mana
Transfigure Fleshwriter for Necrotic Ooze (-2)
Using Necrotic Ooze's ability gained from Fleshwrither, transfigure it for Balthor the Defiled (-4)
Exile Balthor, Bringing back Fleshwrither and Necrotic Ooze (-10)
Transfigure Fleshwrither for Vile Entomber (-14)
Vile Entomber entombs Razaketh, the Foulblooded
Use Ooze to do Razaketh's Sacrafice ability, fetching Reanimate (-16)
Cast Reanimate bringing back Vile Entomber (-18)
On entry entomb Skirge Familiar
Use Ooze to sacrifice Vile Entomber, fetching Asmodeus the Archfiend (-20)
Discard Asmodeus using Ooze/Skirge Familiar
Pay BBB to draw 7 (-26)
Discard 3 cards to create BBB and draw
Repeat till you draw either your deck or as much as you need
Discard Chainer, Dementia Master and Gray Merchant of Asphodel
Pay BBB to reanimate Gray Merchant
Sacrifice Gray Merchant
Recur Gray Merchant till you win
Very demanding Life wise but if you have the mana by all means go for it

Razaketh Line
Needs K'rrik, Razaketh and a creature
Sacrifice a creature, tutoring for Blood celebrant (-2)
Cast blood celebrant (-4)
Create BBB (-13)
Sacrifice Blood Merchant tutoring for Gray Merchant of Asphodel (-15)
Cast Gray Merchant using the BBB and 4 Life (-19)
Gain 24 life with 3 opponents left
Sacrifice Gray Merchant, Tutoring for Reanimate
Cast Reanimate, targeting Blood Celebrant
Create BBBB
Sacrifice Blood Celebrant for Animate Dead/Dance of the Dead
Cast Animate Dead/Dance of the Dead using a floating B
Recur Gray Merchant
Sacrifice Gray Merchant, tutoring for Dance of the Dead/Animate Dead using a floating B
BB Floating
Sacrifice Gray Merchant for Balthor the Defiled
Cast it using BB and 4 life
Pay 6 life to exile it, recurring Gray Merchant and Blood Celebrant
Generate BB with Blood Celebrant
Sacrifice Gray Merchant of Asphodel, tutoring for Necromancy
Cast Necromancy
This line deals a total of 45 damage minimum

Villis, Broker of Blood/Sheoldred the Apocalypse line
Very Easy, Villis draws a card for each life point you lose with Sheoldred giving you life for each card, letting you draw your library and use the life from Sheoldred to assemble a combo line.
Requires K'rikk, Vilis and Sheoldred on the field

Vilis + Chainer Line
Cast Sidisi for 3 generic and 4 life, exploiting it to himself, tutoring for Chainer, Dementia Master
Cast Chainer for 3 generic and 4 life
Recur Sidisi for 9 Life
Exploit him to himself for Entomb
Cast Entomb for 2 life
Entomb Gray Merchant
Recur Gray Merchant for 9 Life
Gain 21 Minimum
Recur Sidisi for 9 Life
Exploit Gray Merchant for Sacrifice
Recur Gray Merchant for 9 Life
Cast Sacrifice targeting Sidisi
Recur Sidisi for 9 life
Exploit Gray Merchant for Dimir House Guard/Viscera Seer/Carrion Feeder
Create a Loop of returning Gray Merchant with chainer, sacrificing it, and returning it till you win the game