Thrasios // Vial - Combo Deck (EDH / Commander)

Game Plan

The Combo
Plan A: Necrotic Ooze Combo
Activate Hermit Druid
Mill your library
return from graveyard Narcomoeba
play a land then return Bloodghast
Cast Dread Return for its flashback cost sacrificing Hermit Druid, Bloodghast and Narcomoeba
Return Necrotic Ooze to battlefield
Add -1/-1 counter using Devoted Druid's ability
Remove -1/-1 counter using Morselhoarder's ability
Repeat to add infinite colored mana
Use Walking Ballista's ability for infinite damage

Plan B: Flash Hulk
Cast Flash
Play and sacrifice Protean Hulk
Search for Body Double and Viscera Seer
Body Double copies Protean Hulk from the graveyard
Sacrifice Body Double to Viscera Seer
Search for 1 Mikaeus, the Unhallowed and Walking Ballista
Sacrifice Walking Ballista then it returns because of Undying
Remove +1/+1 counter for damage
Repeat sacrifice and damage step

Plan C: Flash Hulk to Hermit Druid
Cast Flash
Play and sacrifice Protean Hulk
Search for Mogis's Marauder, Hermit Druid, and Deathrite Shaman.
Hermit Druid and Deathrite Shaman gains haste because of Mogis's Marauder.
Add one green mana with Deathrite Shaman and activate Hermit Druid.
Activate Plan A.

OR:

a) Hermit Druid

Activate Hermit Druid to mill our whole deck at once.
Narcomoeba trigger goes on the stack and resolves, putting it onto the battlefield.
We use Fatestitcher 's Unearth ability to return it from the graveyard to the battlefield.
Since Fatestitcher gains Haste from Unearth, we tap it to untap the mana source we used to pay for its Unearth cost.
We Flashback Dread Return , sacrificing Hermit Druid, Narcomoeba, and Fatestitcher to return Muldrotha, the Gravetide to the battlefield from our graveyard. From here, we have two different options:

Non-infinite Win:

Play Cephalid Coliseum from the graveyard with Muldrotha's ability.
Play Lion's Eye Diamond from the graveyard with Muldrotha's ability.
Crack LED for and use two of those plus one other, random Mana to cast Laboratory Maniac from the graveyard with Muldrotha's ability.
Use your remaining to activate Cephalid Coliseum's Threshold ability to draw on an empty library and win the game with Laboratory Maniac.

Going infinite with Muldrotha:

Play Lion's Eye Diamond from the graveyard.
Crack LED for and use 2 Mana to cast Phantasmal Image from the graveyard.
Copy Muldrotha with Phantasmal Image, let the original go to the graveyard.
Play LED from the graveyard.
as this copied Muldrotha does not need to use its ability to play a creature before the original Muldrotha enters again.
Crack LED and use that mana to cast Animate Dead on the original Muldrotha.
This is a loop that can be used to have infinite Mana.
Thrasios, Triton Hero has an activated ability that only requires Mana to let us draw cards.
This means that we can translate infinite Mana of any sort into infinite draws at any point.
We can cast Laboratory Maniac and activate Thrasios to draw on an empty library and win the game. If someone tries to remove our Laboratory Maniac in response, we can just activate Thrasios again in response to their interaction.