At the beginning of your precombat main phase, The World Spell triggers, putting a lore counter on itself.
The World Spell's third chapter ability triggers, causing you to put Tom Bombadil onto the battlefield from your hand and sacrifice The World Spell.
Mortuary, Cloudstone Curio and Tom Bombadil each trigger.
Resolve the Mortuary trigger, putting The World Spell on top of your library from your graveyard.
Resolve the Cloudstone Curio trigger, choosing to return nothing to your hand from the battlefield.
Resolve the Tom Bombadil trigger, causing you to reveal The World Spell from the top of your library and put it onto the battlefield.
Choose to have The World Spell enter with three lore counters due to its read-ahead ability.
Cloudstone Curio and The World Spell's third chapter ability trigger.
Resolve the Cloudstone Curio trigger, returning Tom Bombadil to your hand from the battlefield.
Resolve the World Spell trigger, causing you to put Tom Bombadil onto the battlefield from your hand and sacrifice The World Spell.
Repeat from step 3.
If desired, you may return a creature card to your hand in step 5, which can then be returned in step 2 for infinite blinking of any creature(s).

Infinite blinking

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Tom Bombadil

The World Spell

Mortuary

Cloudstone Curio

Starfield of Nyx

Opalescence

At the beginning of your precombat main phase, The World Spell triggers, putting a lore counter on itself.
The World Spell's third chapter ability triggers.
Holding priority, activate Lithoform Engine's first ability by paying {2} and targeting it, copying The World Spell's trigger.
Resolve the copy of The World Spell's trigger, putting Copy Enchantment and any non-Saga enchantment onto the battlefield from your hand.
Choose to have Copy Enchantment enter the battlefield as a copy of The World Spell, with three lore counters due to its read-ahead ability.
Copy Enchantment triggers once, and Cloudstone Curio and Altar of the Brood each trigger twice.
Resolve both Altar of the Brood triggers, causing each opponent to mill two cards.
Resolve both Cloudstone Curio triggers, returning Copy Enchantment and any other non-Saga enchantment from the battlefield to your hand.
Resolve the Copy Enchantment trigger, putting it and the non-Saga enchantment onto the battlefield from your hand.
Repeat from step 5.

Infinite mill

Lithoform Engine

Copy Enchantment

Altar of the Brood

At the beginning of your precombat main phase, The World Spell triggers, putting a lore counter on itself.
The World Spell's third chapter ability triggers.
Holding priority, activate Lithoform Engine's first ability by paying {2} and targeting it, copying The World Spell's trigger.
Resolve the copy of The World Spell's trigger, putting Mirrormade and any non-Saga enchantment onto the battlefield from your hand.
Choose to have Mirrormade enter the battlefield as a copy of The World Spell, with three lore counters due to its read-ahead ability.
Mirrormade triggers once, and Cloudstone Curio and Altar of the Brood each trigger twice.
Resolve both Altar of the Brood triggers, causing each opponent to mill two cards.
Resolve both Cloudstone Curio triggers, returning Mirrormade and any other non-Saga enchantment from the battlefield to your hand.
Resolve the Mirrormade trigger, putting it and the non-Saga enchantment onto the battlefield from your hand.
Repeat from step 5.

Mirrormade

At the beginning of your precombat main phase, The World Spell triggers, putting a lore counter on itself.
The World Spell's third chapter ability triggers.
Holding priority, activate Lithoform Engine's first ability by paying {2} and targeting it, copying The World Spell's trigger.
Resolve the copy of The World Spell's trigger, putting Estrid's Invocation and any non-Saga enchantment onto the battlefield from your hand.
Choose to have Estrid's Invocation enter the battlefield as a copy of The World Spell, with three lore counters due to its read-ahead ability.
Estrid's Invocation triggers once, and Cloudstone Curio and Altar of the Brood each trigger twice.
Resolve both Altar of the Brood triggers, causing each opponent to mill two cards.
Resolve both Cloudstone Curio triggers, returning Estrid's Invocation and any other non-Saga enchantment from the battlefield to your hand.
Resolve the Estrid's Invocation trigger, putting it and the non-Saga enchantment onto the battlefield from your hand.
Repeat from step 5.

Estrid's Invocation

At the beginning of your precombat main phase, The World Spell triggers, putting a lore counter on itself.
The World Spell's third chapter ability triggers.
Holding priority, activate Lithoform Engine's first ability by paying {2} and targeting it, copying The World Spell's trigger.
Resolve the copy of The World Spell's trigger, putting Clever Impersonator and any non-Saga enchantment onto the battlefield from your hand.
Choose to have Clever Impersonator enter the battlefield as a copy of The World Spell, with three lore counters due to its read-ahead ability.
Clever Impersonator triggers once, and Cloudstone Curio and Altar of the Brood each trigger twice.
Resolve both Altar of the Brood triggers, causing each opponent to mill two cards.
Resolve both Cloudstone Curio triggers, returning Clever Impersonator and any other non-Saga enchantment from the battlefield to your hand.
Resolve the Clever Impersonator trigger, putting it and the non-Saga enchantment onto the battlefield from your hand.
Repeat from step 5.

Clever Impersonator

At the beginning of your precombat main phase, The World Spell triggers, putting a lore counter on itself.
The World Spell's third chapter ability triggers.
Holding priority, activate Strionic Resonator by paying {2} and targeting it, copying The World Spell's trigger.
Resolve the copy of The World Spell's trigger, putting Copy Enchantment and any non-Saga enchantment onto the battlefield from your hand.
Choose to have Copy Enchantment enter the battlefield as a copy of The World Spell, with three lore counters due to its read-ahead ability.
Copy Enchantment triggers once, and Cloudstone Curio and Altar of the Brood each trigger twice.
Resolve both Altar of the Brood triggers, causing each opponent to mill two cards.
Resolve both Cloudstone Curio triggers, returning Copy Enchantment and any other non-Saga enchantment from the battlefield to your hand.
Resolve the Copy Enchantment trigger, putting it and the non-Saga enchantment onto the battlefield from your hand.
Repeat from step 5.

Strionic Resonator

At the beginning of your precombat main phase, The World Spell triggers, putting a lore counter on itself.
The World Spell's third chapter ability triggers.
Holding priority, activate Strionic Resonator by paying {2} and targeting it, copying The World Spell's trigger.
Resolve the copy of The World Spell's trigger, putting Mirrormade and any non-Saga enchantment onto the battlefield from your hand.
Choose to have Mirrormade enter the battlefield as a copy of The World Spell, with three lore counters due to its read-ahead ability.
Mirrormade triggers once, and Cloudstone Curio and Altar of the Brood each trigger twice.
Resolve both Altar of the Brood triggers, causing each opponent to mill two cards.
Resolve both Cloudstone Curio triggers, returning Mirrormade and any other non-Saga enchantment from the battlefield to your hand.
Resolve the Mirrormade trigger, putting it and the non-Saga enchantment onto the battlefield from your hand.
Repeat from step 5.

At the beginning of your precombat main phase, The World Spell triggers, putting a lore counter on itself.
The World Spell's third chapter ability triggers.
Holding priority, activate Strionic Resonator by paying {2} and targeting it, copying The World Spell's trigger.
Resolve the copy of The World Spell's trigger, putting Estrid's Invocation and any non-Saga enchantment onto the battlefield from your hand.
Choose to have Estrid's Invocation enter the battlefield as a copy of The World Spell, with three lore counters due to its read-ahead ability.
Estrid's Invocation triggers once, and Cloudstone Curio and Altar of the Brood each trigger twice.
Resolve both Altar of the Brood triggers, causing each opponent to mill two cards.
Resolve both Cloudstone Curio triggers, returning Estrid's Invocation and any other non-Saga enchantment from the battlefield to your hand.
Resolve the Estrid's Invocation trigger, putting it and the non-Saga enchantment onto the battlefield from your hand.
Repeat from step 5.

At the beginning of your precombat main phase, The World Spell triggers, putting a lore counter on itself.
The World Spell's third chapter ability triggers.
Holding priority, activate Strionic Resonator by paying {2} and targeting it, copying The World Spell's trigger.
Resolve the copy of The World Spell's trigger, putting Clever Impersonator and any non-Saga enchantment onto the battlefield from your hand.
Choose to have Clever Impersonator enter the battlefield as a copy of The World Spell, with three lore counters due to its read-ahead ability.
Clever Impersonator triggers once, and Cloudstone Curio and Altar of the Brood each trigger twice.
Resolve both Altar of the Brood triggers, causing each opponent to mill two cards.
Resolve both Cloudstone Curio triggers, returning Clever Impersonator and any other non-Saga enchantment from the battlefield to your hand.
Resolve the Clever Impersonator trigger, putting it and the non-Saga enchantment onto the battlefield from your hand.
Repeat from step 5.

Combos with "The World Spell"