Activate Words of Worship twice by paying {2}.
Attempt to draw a card, instead gaining 5 life due to Words of Worship.
Well of Lost Dreams triggers, causing you to pay {3} to gain 5 life due to Words of Worship and draw two cards.
Well of Lost Dreams triggers, holding priority, activate Cadaverous Bloom twice by exiling two cards from your hand, adding {4}.
Activate Words of Worship by paying {1}.
Resolve the Well of Lost Dreams trigger, causing you to pay {3} to gain 5 life due to Words of Worship and draw two cards.
Repeat from step 4.
Optionally, you may pay additional mana into Well of Lost Dreams to draw more cards, which can be exiled by Cadaverous Bloom for near-infinite black and/or green mana.

Exile your library

Infinite draw triggers

Near-infinite black mana

Near-infinite card draw

Near-infinite green mana

Near-infinite lifegain

Near-infinite lifegain triggers

Well of Lost Dreams

Words of Worship

Cadaverous Bloom

Draw a card.
The Locust God and Sheoldred trigger.
Resolve the Locust God trigger, creating a 1/1 Insect creature token with flying and haste.
Resolve the Sheoldred trigger, causing you to gain 2 life.
Well of Lost Dreams triggers. Holding priority, activate Phyrexian Altar by sacrificing the Insect, adding {1}.
Resolve the Well of Lost Dreams trigger, causing you to pay {1} to draw a card.
Repeat from step 2.

Infinite card draw

Near-infinite ETB

Near-infinite LTB

Near-infinite death triggers

Near-infinite sacrifice triggers

The Locust God

Sheoldred, the Apocalypse

Phyrexian Altar

Draw a card.
The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
When the Insect enters the battlefield, Essence Warden triggers, causing you to gain 1 life.
Well of Lost Dreams triggers. Holding priority, activate Phyrexian Altar by sacrificing the Insect, adding {1}.
Resolve the Well of Lost Dreams trigger, causing you to pay {1} to draw a card.
Repeat from step 2.

Essence Warden

Draw a card.
Horizon Chimera triggers, gaining a life.
Well of Lost Dreams triggers.
Discard a card to add {B}.
Allow the Well of Lost Dreams trigger to resolve, paying {1}.
Repeat.

Infinite looting

Skirge Familiar

Horizon Chimera

Combos with "Well of Lost Dreams"