Cast Evangel of Heliod by paying {4}{W}{W}.
When Evangel of Heliod enters the battlefield, it and Cloudstone Curio trigger.
Resolve the Cloudstone Curio trigger, choosing to return nothing to your hand from the battlefield.
Resolve the Evangel of Heliod trigger, creating a number of 1/1 Soldier creature tokens equal to your devotion to white.
When the Soldiers enter the battlefield, Cloudstone Curio triggers that many times.
Resolve the first Cloudstone Curio trigger, returning Evangel of Heliod to your hand from the battlefield.
Resolve all remaining Cloudstone Curio triggers, choosing to return nothing to your hand from the battlefield.
Activate Phyrexian Altar six times by sacrificing six Soldiers, adding {4}{W}{W}.
Repeat.
If your devotion to white excluding Evangel of Heliod is at least five, this combo will net infinite colored mana.

Infinite colored mana

Infinite creature tokens

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Infinite storm count

Cloudstone Curio

Phyrexian Altar

Evangel of Heliod

At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Evangel of Heliod with haste.
When the Evangel of Heliod token enters the battlefield, it triggers, creating a number of 1/1 Soldier creature tokens equal to your devotion to white.
Activate Time Sieve by tapping it and sacrificing five creature tokens, causing you to take an extra turn after this one.
Repeat each turn.

Infinite turns

Time Sieve

Encroaching Mycosynth

Helm of the Host

At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Evangel of Heliod.
The Evangel of Heliod token triggers, creating a number of 1/1 Soldier creature tokens equal to your devotion to white.
Activate Time Sieve by tapping it and sacrificing five creature tokens, causing you to take an extra turn after this one.
Repeat each turn.

Biotransference

At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Evangel of Heliod with haste.
The Evangel of Heliod token enters the battlefield, creating a number of 1/1 Soldier creature tokens equal to your devotion to white.
Activate Time Sieve by tapping it and sacrificing five creature tokens, causing you to take an extra turn after this one.
Repeat each turn.

Mycosynth Lattice

At the beginning of your combat phase, Rionya triggers, creating at least one token copy of Evangel of Heliod with haste.
When the Evangel of Heliod token enters the battlefield, it triggers, creating at least four 1/1 Soldier creature tokens.
Activate Time Sieve by tapping it, sacrificing the Evangel of Heliod token and the Soldier tokens, causing you to take an extra turn after this one.
Repeat each turn.

Rionya, Fire Dancer

Declare Delina as an attacker.
Delina triggers, creating at least one token copy of Evangel of Heliod with haste.
When the Evangel of Heliod token enters the battlefield, it triggers, creating at least four 1/1 Soldier creature tokens.
Activate Time Sieve by tapping it, sacrificing the Evangel of Heliod token and the Soldier tokens, causing you to take an extra turn after this one.
Repeat each turn.

Delina, Wild Mage

Activate Kiki-Jiki by tapping it, creating a token copy of Evangel of Heliod with haste.
When the Evangel of Heliod token enters the battlefield, it triggers, creating at least four 1/1 Soldier creature tokens.
Activate Time Sieve by tapping it, sacrificing the Evangel of Heliod token and the Soldier tokens, causing you to take an extra turn after this one.
Repeat each turn.

Combos with "Evangel of Heliod"