Molderhulk | Cloudstone Curio | Necroduality

(and one other card)

You control at least one Swamp and at least one Forest that enter the battlefield untapped.
You have at least seven creature cards in your graveyard.

Activate a Swamp and Forest by tapping them, adding ({B} magic symbol) ({G} magic symbol) .
Activate
Overgrown Estate twice by sacrificing the Swamp and Forest, causing you to gain 6 life.
Cast
Molderhulk by paying ({B} magic symbol) ({G} magic symbol) .
When
Molderhulk enters the battlefield, it,
Necroduality and
Cloudstone Curio trigger.
Resolve the
Cloudstone Curio trigger, choosing to return nothing to your hand.
Resolve the
Necroduality trigger, creating a token copy of
Molderhulk.
When the
Molderhulk token enters the battlefield, it and
Cloudstone Curio trigger.
Resolve the
Cloudstone Curio trigger, returning the nontoken
Molderhulk from the battlefield to your hand.
Resolve the token
Molderhulk's trigger, returning a Swamp from your graveyard to the battlefield.
When the Swamp enters the battlefield,
Cloudstone Curio triggers; choose not to return anything to your hand.
Resolve the nontoken
Molderhulk's trigger from step 4, returning a Forest from your graveyard to the battlefield.
When the Forest enters the battlefield,
Cloudstone Curio triggers; choose not to return anything to your hand.
Repeat.