The Decklist Voja, Jaws of the Conclave View on Archidekt Commander (1) 1 Voja, Jaws of the ConclaveVoja, Jaws of the Conclave Creatures (43) 1 Arbor ElfArbor Elf 1 Armorcraft JudgeArmorcraft Judge 1 Arwen, Weaver of HopeArwen, Weaver of Hope 1 Beast WhispererBeast Whisperer 1 Bloom TenderBloom Tender 1 Bramblewood ParagonBramblewood Paragon 1 Circle of Dreams DruidCircle of Dreams Druid 1 Craterhoof BehemothCraterhoof Behemoth 1 Devoted DruidDevoted Druid 1 Elvish ArchdruidElvish Archdruid 1 Elvish HarbingerElvish Harbinger 1 Elvish MysticElvish Mystic 1 Elvish WarmasterElvish Warmaster 1 Fyndhorn ElvesFyndhorn Elves 1 Gyre SageGyre Sage 1 Heritage DruidHeritage Druid 1 Hollowhenge OverlordHollowhenge Overlord 1 Incubation DruidIncubation Druid 1 Joraga WarcallerJoraga Warcaller 1 Leaf-Crowned VisionaryLeaf-Crowned Visionary 1 Llanowar ElvesLlanowar Elves 1 Marwyn, the NurturerMarwyn, the Nurturer 1 Masked VandalMasked Vandal 1 Mirror EntityMirror Entity 1 Priest of TitaniaPriest of Titania 1 Quirion RangerQuirion Ranger 1 RealmwalkerRealmwalker 1 Reclamation SageReclamation Sage 1 Rhys the RedeemedRhys the Redeemed 1 Rishkar, Peema RenegadeRishkar, Peema Renegade 1 Roaming ThroneRoaming Throne 1 Selvala, Heart of the WildsSelvala, Heart of the Wilds 1 Shalai and HallarShalai and Hallar 1 Taurean MaulerTaurean Mauler 1 Tolsimir WolfbloodTolsimir Wolfblood 1 Tolsimir, Friend to WolvesTolsimir, Friend to Wolves 1 Tolsimir, Midnight's LightTolsimir, Midnight's Light 1 Turntimber RangerTurntimber Ranger 1 Viridian JoinerViridian Joiner 1 Walking BallistaWalking Ballista 1 Wolf-Skull ShamanWolf-Skull Shaman 1 Wolfbriar ElementalWolfbriar Elemental 1 Wren's Run PackmasterWren's Run Packmaster Instants (11) 1 Archdruid's CharmArchdruid's Charm 1 Beast WithinBeast Within 1 Chord of CallingChord of Calling 1 Generous GiftGenerous Gift 1 Inspiring CallInspiring Call 1 Path to ExilePath to Exile 1 Return of the WildspeakerReturn of the Wildspeaker 1 Shields of Velis VelShields of Velis Vel 1 Swords to PlowsharesSwords to Plowshares 1 Teferi's ProtectionTeferi's Protection 1 Volatile ClawsVolatile Claws Artifacts (4) 1 Lightning GreavesLightning Greaves 1 Maskwood NexusMaskwood Nexus 1 Sol RingSol Ring 1 Swiftfoot BootsSwiftfoot Boots Sorceries (2) 1 Blasphemous ActBlasphemous Act 1 Triumph of the HordesTriumph of the Hordes Enchantments (2) 1 All Will Be OneAll Will Be One 1 Doubling SeasonDoubling Season Lands (37) 1 Arid MesaArid Mesa 1 Bloodstained MireBloodstained Mire 1 Boseiju, Who EnduresBoseiju, Who Endures 1 Bountiful PromenadeBountiful Promenade 1 BrushlandBrushland 1 Command TowerCommand Tower 1 Flooded StrandFlooded Strand 4 ForestForest 1 Jetmir's GardenJetmir's Garden 1 Karplusan ForestKarplusan Forest 1 Lush PorticoLush Portico 1 Marsh FlatsMarsh Flats 1 Misty RainforestMisty Rainforest 1 Mosswort BridgeMosswort Bridge 1 MountainMountain 1 MutavaultMutavault 1 Nykthos, Shrine to NyxNykthos, Shrine to Nyx 1 Overgrown FarmlandOvergrown Farmland 1 Path of AncestryPath of Ancestry 2 PlainsPlains 1 Rockfall ValeRockfall Vale 1 Rootbound CragRootbound Crag 1 Sacred FoundrySacred Foundry 1 Scalding TarnScalding Tarn 1 Spectator SeatingSpectator Seating 1 Spire GardenSpire Garden 1 Stomping GroundStomping Ground 1 Sunpetal GroveSunpetal Grove 1 Temple GardenTemple Garden 1 Verdant CatacombsVerdant Catacombs 1 Windswept HeathWindswept Heath 1 Wooded FoothillsWooded Foothills 1 Yavimaya, Cradle of GrowthYavimaya, Cradle of Growth My goodness, this deck gets out of hand fast

There are some cases where Thermo-Alchemist is the only creature in the deck
we all know how many free sacrificial outlets are available in EDH, from Ashnod's Altar to the humble Viscera Seer
Nasty End
Anyways, Ophiomancer is useful in just about any deck running black as a deterrent even if you cant sacrifice the Snake token regularly
Normally, when a creature dies you remove all counters and anything else attached to them when they go to the graveyard