Cast Time Warp by paying its mana cost, causing you to take an extra turn after this one.
Cast Repository Skaab by paying {3}{U}.
When Repository Skaab enters the battlefield, its first ability triggers, causing it to exploit itself. Its second ability then triggers, returning Time Warp from your graveyard to your hand.
At the beginning of your end step, Golbez's second ability triggers, returning Repository Skaab from your graveyard to your hand.
Repeat each turn.

Infinite turns

Golbez, Crystal Collector

Repository Skaab

Time Warp

Cast Arcbound Reclaimer by paying {4}.
When Arcbound Reclaimer enters the battlefield, Golbez triggers.
Holding priority, activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting an artifact creature card from your graveyard onto the top of your library.
Thran Vigil triggers, putting a +1/+1 counter on Arcbound Reclaimer.
Resolve the Golbez ability, putting the artifact creature card from the top of your library into your graveyard.
Unshakable Tail triggers, creating a Clue token.
When the Clue enters the battlefield, Golbez triggers.
Repeat from step 3.

Infinite Clue tokens

Thran Vigil

Arcbound Reclaimer

Unshakable Tail

Put a +1/+1 counter on a creature you control.
Moss-Pit Skeleton triggers, putting it from your graveyard onto the top of your library.
Chalk Outline triggers, creating a 2/2 Detective creature token and a Clue token.
When the Clue enters the battlefield, Golbez and Cloakwood Swarmkeeper trigger.
Resolve the Golbez trigger, putting Moss-Pit Skeleton from the top of your library into your graveyard.
Resolve the Cloakwood Swarmkeeper trigger, putting a +1/+1 counter on it.
Repeat from step 2.

Infinite ETB

Infinite creature tokens

Infinite +1/+1 counters on a creature

Chalk Outline

Cloakwood Swarmkeeper

Moss-Pit Skeleton

Put a +1/+1 counter on a creature you control.
Moss-Pit Skeleton triggers, putting it from your graveyard onto the top of your library.
Kheru Goldkeeper triggers, creating a Treasure token
When the Treasure enters the battlefield, Golbez and Cloakwood Swarmkeeper trigger.
Resolve the Golbez trigger, putting Moss-Pit Skeleton from the top of your library into your graveyard.
Resolve the Cloakwood Swarmkeeper trigger, putting a +1/+1 counter on it.
Repeat from step 2.

Infinite colored mana

Infinite Treasure tokens

Kheru Goldkeeper

Cast Rosie Cotton by paying {2}{W}.
When Rosie Cotton enters the battlefield, its first ability triggers, creating a Food token.
When the token enters the battlefield, Rosie Cotton's second ability and Golbez trigger.
Resolve the Rosie Cotton trigger, putting a +1/+1 counter on Arcbound Reclaimer.
Holding priority, activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting an artifact creature card from your graveyard onto the top of your library.
Resolve the Golbez ability, putting the artifact creature card from the top of your library into your graveyard.
Unshakable Tail triggers, creating a Clue token.
Repeat from step 3.

Rosie Cotton of South Lane

Cast Arcbound Reclaimer by paying {4}.
When Arcbound Reclaimer enters the battlefield, Yotian Dissident and Golbez trigger.
Resolve the Yotian Dissident trigger, putting a +1/+1 counter on Arcbound Reclaimer.
Holding priority, activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting an artifact creature card from your graveyard onto the top of your library.
Resolve the Golbez ability, putting the artifact creature card from the top of your library into your graveyard.
Unshakable Tail triggers, creating a Clue token.
When the Clue enters the battlefield, Yotian Dissident and Golbez trigger.
Repeat from step 3.

Combos with "Golbez, Crystal Collector"