Activate Altar Golem by tapping it, creating at least five 1/1 Elemental creature tokens with haste.
Activate Altar Golem by tapping five Elemental tokens, untapping Altar Golem.
Repeat.

Infinite ETB

Infinitely large creature until end of turn

Infinite creature tokens with haste

Elemental Mastery

Altar Golem

Tap Necrotic Ooze using Whisper, Blood Liturgist's ability to sacrifice two creatures and return Abhorrent Overlord to battlefield.
Abhorrent Overlord's ETB triggers, creating at least 5 creature tokens.
Using Altar Golem's ability, tap Abhorrent Overlord and 4 tokens to untap Necrotic Ooze.
Tap Necrotic Ooze and sacrifice Abhorrent Overlord and a tapped token to Whisper's ability to return Marionetter Master to the battlefield, creating 3 Servo tokens.
Tap Marionette Master and the 4 untapped tokens to untap Necrotic Ooze.
Sacrifice Marionetter Master and a Servo token, causing target opponent to lose 1 life and reanimating Abhorrent Overlord.
Repeat from step 2 for infinite life loss.

Infinite death triggers

Infinite lifeloss

Infinite LTB

Infinite sacrifice triggers

Infinite tapped creature tokens

Necrotic Ooze

Whisper, Blood Liturgist

Abhorrent Overlord

Marionette Master

Cast Storm Herd by paying {8}{W}, creating a number of 1/1 Pegasus creature tokens equal to your life total.
During your next upkeep, Mayael's Aria triggers, causing you to put a +1/+1 counter on each creature you control, gain 10 life and win the game.

Win the game at the beginning of your next upkeep

Mayael's Aria

Storm Herd

Combos with "Altar Golem"