Cause a non-Human creature to enter the battlefield under your control.
Sage of the Falls triggers, causing you to mill two cards, return Necroplasm from your graveyard to your hand, and discard Necroplasm.
Tormod triggers, creating a tapped 2/2 Zombie creature token.
Repeat from step 2.

Infinite self-mill

Near-infinite ETB

Near-infinite self-discard triggers

Near-infinite tapped creature tokens

Tormod, the Desecrator

Sage of the Falls

Necroplasm

Cause a non-Human creature to enter the battlefield under your control.
Sage of the Falls triggers, causing you to mill two cards, return Necroplasm from your graveyard to your hand, and discard Necroplasm.
Desecrated Tomb triggers, creating a 1/1 Bat creature token.
Repeat from step 2.

Near-infinite creature tokens

Desecrated Tomb

Activate Anje Falkenrath by tapping it and discarding Necroplasm.
Glint-Horn Buccaneer triggers, dealing 1 damage to each opponent.
 Resolve Anje Falkenrath's ability, choosing to mill two cards and return Necroplasm from your graveyard to your hand instead of drawing.
Repeat until you mill Kozilek.
Kozilek triggers, shuffling your graveyard into your library.
Repeat.

Infinite damage

Infinite self-discard triggers

Anje Falkenrath

Conspiracy

Falkenrath Gorger

Kozilek, Butcher of Truth

Glint-Horn Buccaneer

Put a +1/+1 counter on Benthic Biomancer.
Benthic Biomancer triggers, causing you to mill two cards and return Necroplasm from your graveyard to your hand, and then causing you to discard Necroplasm.
Thran Vigil triggers, putting a +1/+1 counter on Benthic Biomancer.
Repeat from step 2.

Thran Vigil

Benthic Biomancer

Activate Necroplasm's cycling ability by paying {0} and discarding it, causing you to mill a number of cards and return Necroplasm from your graveyard to your hand due to its dredge ability.
Repeat.

Rhet-Tomb Mystic

New Perspectives

Attempt to draw a card. 
The draw will be replaced by Chains of Mephistopheles, instead causing you to discard Necroplasm. Then, the draw will be replaced by Necroplasm's dredge ability, causing you to mill cards and return Necroplasm from your graveyard to your hand.
Dredger's Insight's first ability triggers, causing you to gain 1 life.
Lich's Mastery triggers, attempting to draw a card.
Repeat from step 2.

Combos with "Necroplasm"