Activate all Slivers you control by tapping them, adding at least {4}.
Activate Sliver Overlord's first ability by paying {3}, searching your library for a Sliver with mana value 1.
Cast that Sliver by paying {1}.
Intruder Alarm triggers, untapping all creatures.
Repeat, gaining {1} more each time in step 1 and searching for a Sliver costing up to {1} more each time in step 2.

Cast a subset of spells in your library

Infinite mana creatures you control can produce

Infinite untap of creatures

Near-infinite creature ETB

Sliver Overlord

Gemhide Sliver

Intruder Alarm

Firewake Sliver

Manaweft Sliver

Activate all Slivers you control by tapping them, adding one mana of any color for each Sliver tapped this way.
Cast Sliver Grandmother from the command zone by paying {W}{U}{B}{R}{G} and commander tax, if applicable.
When Sliver Grandmother enters the battlefield, Intruder Alarm triggers.
Holding priortiy, activate Sliver Gravemother by tapping it, adding one mana of any color.
Resolve the Intruder Alarm trigger, untapping all creatures.
Activate all Slivers you control by tapping them, adding one mana of any color for each Sliver tapped this way.
Activate Sliver Gravemother by paying {1} and sacrificing it.
Choose not to return Sliver Gravemother to the command zone from your graveyard.
Resolve the Sliver Gravemother ability, giving target Sliver +2/+2 until end of turn.
Activate Sliver Gravemother's encore ability by paying {5} and exiling it.
Choose to return Sliver Gravemother to the command zone from exile.
Resolve the Sliver Gravemother ability, creating a token copy of it for each opponent you have.
When the Sliver Gravemother tokens enter the battlefield, Intruder Alarm triggers that many times.
Holding priority, activate the Sliver Gravemother tokens by tapping them, adding at least three mana of any color(s).
Resolve the first Intruder Alarm trigger, untapping all creatures.
Activate all Slivers you control by tapping them, adding one mana of any color for each Sliver tapped this way.
Repeat from step 15 for each remaining trigger.
Repeat from step 1.

Infinite colored mana

Infinite commander casts

Infinite creature tokens with haste

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite power and toughness for certain creatures until end of turn

Infinite creature sacrifice triggers

Infinite storm count

Sliver Gravemother

Activate Silver Queen by paying {1}, creating a 1/1 Sliver creature token.
Activate the Sliver token by tapping it, adding {1}.
Repeat.

Infinite tapped creature tokens

Sliver Queen

Agatha of the Vile Cauldron

Combos with "Firewake Sliver"