This is a competitive Necrotic Ooze combo deck. The way the deck works is to put cards into your graveyard, then use Necrotic Ooze to combo off using the cards.
Game-Winning Combos
Kiki-Jiki + Devoted Druid= infinite combat damage and/or infinite green mana
Kiki-Jiki + Grimgrin= infinite combat damage
Kiki-Jiki + Cinderhaze Wretch= infinite combat damage and/or infinite discard
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch/Grimgrin + Arcanis the Omnipotent= infinite card draw
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch/Grimgrin + Bloodline Keeper
= infinite tokens
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch/Grimgrin + Argothian Elder= infinite mana of colors that your lands can produce
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch/Grimgrin + Fatestitcher= infinite tapping/untapping of permanents
Devoted Druid + Quillspike= infinite combat damage
Kiki-Jiki + Grimgrin + Triskelion= infinite direct damage
Kiki-Jiki + Death Cultist= infinite drain
Kiki-Jiki + Fulminator Mage= infinite destruction of non-basic lands
Civilized Scholar
+ Grave-Shell Scarab= infinite self-mill
Triskelion + Phyrexian Devourer= infinite direct damage
Phyrexian Devourer= SUPER POWERED TURBO KILL MACHINE
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch + Argothian Elder + Spikeshot Elder= infinite direct damage
Kiki-Jiki + Grimgrin + Spikeshot Elder= infinite direct damage
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch + Argothian Elder +
Carnifex Demon= infinite -1/-1 counters on all other creatures.
Grim Poppet + Devoted Druid/Cinderhaze Wretch= infinite -1/-1 counters
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch/Grimgrin + Argothian Elder + Mirror-Mad Phantasm= infinite self-mill
Kiki-Jiki + Devoted Druid + Wickerbough Elder= infinite artifact/enchantment destruction
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch/Grimgrin + Argothian Elder + Thornling/Torchling/AEtherling/Morphling/Reaper of the Wilds= infinite SUPERPOWERS!
Kiki-Jiki + Grimgrin + Jarad, Golgari Lich Lord= infinite direct life loss
Fauna Shaman + Devoted Druid= infinite creature cycling equal to Necrotic Ooze's toughness
Devoted Druid/Cinderhaze Wretch + Morselhoarder= infinite mana of any color
Devoted Druid/Cinderhaze Wretch + Morselhoarder + Thornling/Torchling/AEtherling/Morphling/Reaper of the Wilds= infinite SUPERPOWERS!
Devoted Druid/Cinderhaze Wretch + Morselhoarder + Spikeshot Elder= infinite direct damage
Devoted Druid/Cinderhaze Wretch + Morselhoarder + Mirror-Mad Phantasm= infinite self-mill
Devoted Druid/Cinderhaze Wretch + Morselhoarder + Wickerbough Elder= infinite artifact/enchantment destruction
Devoted Druid/Cinderhaze Wretch + Morselhoarder + Carnifex Demon= infinite -1/-1 counters on all other creatures
Cinderhaze Wretch + Morselhoarder + Fauna Shaman= infinite creature cycling equal to Necrotic Ooze's toughness
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch + Morselhoarder + Grave-Shell Scarab= infinite card draw
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch/Grimgrin + Argothian Elder + Grave-Shell Scarab= infinite card draw
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch/Grimgrin + Argothian Elder + Jarad= infinite direct life loss
Channeler Initiate + Devoted Druid/Cinderhaze Wretch= infinite mana
Channeler Initiate + Cinderhaze Wretch + Fauna Shaman= infinite creature cycling equal to Necrotic Ooze's toughness
Channeler Initiate + Devoted Druid/Cinderhaze Wretch + Carnifex Demon= infinite -1/-1 counters on all other creatures
Channeler Initiate + Devoted Druid/Cinderhaze Wretch + Wickerbough Elder= infinite artifact/enchantment destruction
Channeler Initiate + Devoted Druid/Cinderhaze Wretch + Mirror-Mad Phantasm= infinite self-mill
Channeler Initiate + Devoted Druid/Cinderhaze Wretch + Spikeshot Elder= infinite direct damage
Channeler Initiate + Devoted Druid/Cinderhaze Wretch + Thornling/Torchling/AEtherling/Morphling/Reaper of the Wilds= infinite SUPERPOWERS!
Kiki-Jiki + Cinderhaze Wretch/Grimgrin + Argothian Elder + Fauna Shaman= infinite creature cycling equal to Necrotic Ooze's toughness
Devoted Druid/Cinderhaze Wretch + Arcanis the Omnipotent= infinite card draw equal to Necrotic Ooze's toughness
Devoted Druid/Cinderhaze Wretch + Bloodline Keeper
= infinite vampire tokens equal to Necrotic Ooze's toughness
Devoted Druid/Cinderhaze Wretch + Fatestitcher= infinite tapping/untapping of permanents equal to Necrotic Ooze's toughness
Channeler Initiate + Devoted Druid/Cinderhaze Wretch + Havengul Lich= infinite creature reanimation
Kiki-Jiki + Devoted Druid/Cinderhaze Wretch/Grimgrin + Argothian Elder + Havengul Lich= infinite reanimation
Devoted Druid/Cinderhaze Wretch + Morselhoarder + Havengul Lich= infinite reanimation
Strong One Card Interactions With Necrotic Ooze
Mirror-Mad Phantasm= super mill
Thornling/Torchling/AEtherling/Morphling/Reaper of the Wilds= minor superpowers
Spellskite= super protection
Civilized Scholar
= super creature discard
Putrid Imp/Wild Mongrel/Lotleth Troll/Skirge Familiar= creature discard for more combos
Pack Rat= clones plus discard
Fauna Shaman= tutor plus discard
Scavenging Ooze= super life gain plus buffing up Necrotic Ooze and getting rid of opposing graveyards
Kozilek, the Great Distortion= counter ALL the spells
Hermit Druid= insta self-mill
Myr Propagator= clones
Grave-Shell Scarab= sac your cloned Necrotic Oozes for turbo card draw, and it dredges, so you can discard it again and again using something like Fauna Shaman or Civilized Scholar
to get super powerful effects.
Fulminator Mage= sac your Necrotic Oozes for land destruction
Havengul Lich= If it's on the battlefield and Necrotic Ooze is in your graveyard, use it to reanimate the Ooze. Vise-versa, use Necrotic Ooze to return Havengul Lich using its own ability.
The proper way to use the druid is like this: If Necrotic Ooze is on the battlefield, Hermit Druid can be in the graveyard or on the battlefield, whichever is more convenient. Activate its ability and win with a manaless Necrotic Ooze combo. Otherwise, you activate Hermit Druid, putting your entire library into your graveyard, getting a Narcomoeba. If Hermit Druid is the only creature you have, play a land to get Bloodghast, then tap the land to activate Fatestitcher's unearth ability. Now you have 3 creatures. Sac your Narcomoeba to Cabal Therapy naming a spell that could hinder you. Then, sac all three creatures to Dread Return, reanimating Necrotic Ooze. Then use a combo.
Anyway, that was my deck. If you liked it, please comment and upvote!