Cast Dream's Grip by paying {U}, targeting Mystic Sanctuary.
Orvar and Case of the Ransacked Lab trigger.
Resolve the Orvar trigger, creating a token copy of Mystic Sanctuary.
When the Mystic Sanctuary token enters the battlefield untapped, it triggers, putting Aquitect's Will from your graveyard onto the top of your library.
Resolve the Case of the Ransacked Lab trigger, drawing Aquitect's Will from the top of your library.
Resolve Dream's Grip, untapping Mystic Sanctuary.
Activate Mystic Sanctuary and the Mystic Sanctuary token by tapping them, adding {U}{U}.
Cast Aquitect's Will by paying {U}, targeting Mystic Sanctuary.
Orvar and Case of the Ransacked Lab trigger.
Resolve the Orvar trigger, creating a token copy of Mystic Sanctuary.
When the Mystic Sanctuary token enters the battlefield untapped, it triggers, putting Dream's Grip from your graveyard onto the top of your library.
Resolve the Case of the Ransacked Lab trigger, drawing Dream's Grip from the top of your library.
Resolve Aquitect's Will, causing you to draw a card.
Repeat.

Infinite card draw

Infinite draw triggers

Near-infinite landfall triggers

Near-infinite magecraft triggers

Near-infinite blue mana

Near-infinite storm count

Near-infinite Island tokens

Orvar, the All-Form

Mystic Sanctuary

Dream's Grip

Aquitect's Will

Case of the Ransacked Lab

Activate Kiki-Jiki by tapping it, copying Blazing Firesinger. It'll enter prepared due to its effect.
Cast a copy of Seething Song by paying {1}{R} due to Case of the Ransacked Lab.
Hematite Talisman triggers, causing you to pay {3} to untap Kiki-Jiki.
Resolve Seething Song, adding {R}{R}{R}{R}{R}.
Repeat.

Infinite creature ETB

Infinite creature LTB

Infinite creature tokens with haste

Infinite death triggers

Infinite magecraft triggers

Infinite creature sacrifice triggers

Infinite storm count

Kiki-Jiki, Mirror Breaker

Blazing Firesinger // Seething Song

Hematite Talisman

Cast a copy of Seething Song from exile by paying no more than {1}{R}, adding {R}{R}{R}{R}{R}.
When you cast that spell, if Case of the Ransacked Lab is solved, it triggers.
Holding priority, activate Emiel the Blessed by paying {3}, blinking Blazing Firesinger, which enters prepared.
Repeat any number of times.
Resolve any number of triggers from Case of the Ransacked Lab, if it was solved, drawing any number of cards.
If the remaining number of Case of the Ransacked Lab triggers is greater than the number of cards in your library, you must win the game or remove those triggers from the stack at instant speed to avoid losing the game from drawing from an empty library.

Emiel the Blessed

Cast Nameless Inversion from your graveyard, as it is a Knight card, by paying {0} due to Case of the Ransacked Lab and Morophon, giving a creature +3/-3 until end of turn.
If the creature has toughness 0 or less, the creature dies as a state-based action.
Repeat as desired.

Combos with "Case of the Ransacked Lab"