Grist, Voracious Larva // Grist, the Plague Swarm | Vorinclex, Monstrous Raider | Body Launderer

(and two other cards)

Activate
Altar of Dementia by sacrificing
Body Launderer.
When
Body Launderer dies, its second ability triggers, returning
Grist, Voracious Larva from your graveyard to the battlefield.
When
Grist, Voracious Larva enters the battlefield, it triggers, causing you to pay ({G} magic symbol) to exile it and return it to the battlefield as
Grist, the Plague Swarm with six loyalty counters due to
Vorinclex.
Resolve the
Altar of Dementia ability, causing target player to mill cards equal to
Body Launderer's power.
Activate
Grist, the Plague Swarm's third loyalty ability by removing six loyalty counters from it.
Grist, the Plague Swarm is put into your graveyard as a state-based action due to having zero loyalty.
Resolve the
Grist, the Plague Swarm ability, creating a token copy of each creature card in your graveyard that is a 1/1 Insect.
When the
Grist, Voracious Larva and Hidden Herbalist tokens enter the battlefield, the Hidden Herbalist token triggers once and the
Grist, Voracious Larva token triggers for each token created this way.
Resolve all
Grist, Voracious Larva triggers, choosing not to pay.
Resolve the Hidden Herbalist trigger, adding ({G} magic symbol) ({G} magic symbol) .
Activate
Altar of Dementia by sacrificing the
Grist, Voracious Larva token, causing target player to mill cards equal to
Grist's power.
Repeat from step 1, sacrificing a
Body Launderer token instead.