Cast Tyvar by paying {2}{G}{G}, which enters with six loyalty counters due to Doubling Season.
Activate Tyvar's third loyalty ability by removing six loyalty counters from it.
Tyvar dies as a state-based action due to having zero loyalty.
Resolve the Tyvar ability, causing you to get an emblem.
Cast Elvish Mystic by paying {G}.
Tyvar's emblem triggers, causing the Elvish Mystic spell to gain haste, and you to draw two cards.
Elvish Mystic enters the battlefield, triggering Cloudstone Curio, returning Llanowar Elves from the battlefield to your hand.
Activate Elvish Mystic by tapping it, adding {G}.
Cast Llanowar Elves by paying {G}.
Tyvar's emblem triggers, causing the Llanowar Elves spell to gain haste, and you to draw two cards.
Llanowar Elves enters the battlefield, triggering Cloudstone Curio, returning Elvish Mystic from the battlefield to your hand.
Activate Llanowar Elves by tapping it, adding {G}.
Repeat from step 5.

Infinite card draw

Infinite draw triggers

Near-infinite creature ETB

Near-infinite creature LTB

Near-infinite storm count

Tyvar Kell

Cloudstone Curio

Doubling Season

Llanowar Elves

Elvish Mystic

Cast Tyvar by paying {2}{G}{G}, which enters with six loyalty counters due to Doubling Season.
Activate Tyvar's third loyalty ability by removing six loyalty counters from it.
Tyvar dies as a state-based action due to having zero loyalty.
Resolve the Tyvar ability, causing you to get an emblem.
Cast Elvish Mystic by paying {G}.
Tyvar's emblem triggers, causing the Elvish Mystic spell to gain haste, and you to draw two cards.
Elvish Mystic enters the battlefield, triggering Cloudstone Curio, returning Fyndhorn Elves from the battlefield to your hand.
Activate Elvish Mystic by tapping it, adding {G}.
Cast Fyndhorn Elves by paying {G}.
Tyvar's emblem triggers, causing the Fyndhorn Elves spell to gain haste, and you to draw two cards.
Fyndhorn Elves enters the battlefield, triggering Cloudstone Curio, returning Elvish Mystic from the battlefield to your hand.
Activate Fyndhorn Elves by tapping it, adding {G}.
Repeat from step 5.

Fyndhorn Elves

Cast Tyvar by paying {2}{G}{G}, which enters with six loyalty counters due to Doubling Season.
Activate Tyvar's third loyalty ability by removing six loyalty counters from it.
Tyvar dies as a state-based action due to having zero loyalty.
Resolve the Tyvar ability, causing you to get an emblem.
Cast Fyndhorn Elves by paying {G}.
Tyvar's emblem triggers, causing the Fyndhorn Elves spell to gain haste, and you to draw two cards.
Fyndhorn Elves enters the battlefield, triggering Cloudstone Curio, returning Llanowar Elves from the battlefield to your hand.
Activate Fyndhorn Elves by tapping it, adding {G}.
Cast Llanowar Elves by paying {G}.
Tyvar's emblem triggers, causing the Llanowar Elves spell to gain haste, and you to draw two cards.
Llanowar Elves enters the battlefield, triggering Cloudstone Curio, returning Fyndhorn Elves from the battlefield to your hand.
Activate Llanowar Elves by tapping it, adding {G}.
Repeat from step 5.

Cast Tyvar by paying {2}{G}{G}, which enters with six loyalty counters due to Vorinclex.
Activate Tyvar's third loyalty ability by removing six loyalty counters from it.
Tyvar dies as a state-based action due to having zero loyalty.
Resolve the Tyvar ability, causing you to get an emblem.
Cast Elvish Mystic by paying {G}.
Tyvar's emblem triggers, causing the Elvish Mystic spell to gain haste, and you to draw two cards.
Elvish Mystic enters the battlefield, triggering Cloudstone Curio, returning Llanowar Elves from the battlefield to your hand.
Activate Elvish Mystic by tapping it, adding {G}.
Cast Llanowar Elves by paying {G}.
Tyvar's emblem triggers, causing the Llanowar Elves spell to gain haste, and you to draw two cards.
Llanowar Elves enters the battlefield, triggering Cloudstone Curio, returning Elvish Mystic from the battlefield to your hand.
Activate Llanowar Elves by tapping it, adding {G}.
Repeat from step 5.

Vorinclex, Monstrous Raider

Cast Tyvar by paying {2}{G}{G}, which enters with six loyalty counters due to Vorinclex.
Activate Tyvar's third loyalty ability by removing six loyalty counters from it.
Tyvar dies as a state-based action due to having zero loyalty.
Resolve the Tyvar ability, causing you to get an emblem.
Cast Fyndhorn Elves by paying {G}.
Tyvar's emblem triggers, causing the Fyndhorn Elves spell to gain haste, and you to draw two cards.
Fyndhorn Elves enters the battlefield, triggering Cloudstone Curio, returning Llanowar Elves from the battlefield to your hand.
Activate Fyndhorn Elves by tapping it, adding {G}.
Cast Llanowar Elves by paying {G}.
Tyvar's emblem triggers, causing the Llanowar Elves spell to gain haste, and you to draw two cards.
Llanowar Elves enters the battlefield, triggering Cloudstone Curio, returning Fyndhorn Elves from the battlefield to your hand.
Activate Llanowar Elves by tapping it, adding {G}.
Repeat from step 5.

Cast Tyvar by paying {2}{G}{G}, which enters with six loyalty counters due to Vorinclex.
Activate Tyvar's third loyalty ability by removing six loyalty counters from it.
Tyvar dies as a state-based action due to having zero loyalty.
Resolve the Tyvar ability, causing you to get an emblem.
Cast Elvish Mystic by paying {G}.
Tyvar's emblem triggers, causing the Elvish Mystic spell to gain haste, and you to draw two cards.
Elvish Mystic enters the battlefield, triggering Cloudstone Curio, returning Fyndhorn Elves from the battlefield to your hand.
Activate Elvish Mystic by tapping it, adding {G}.
Cast Fyndhorn Elves by paying {G}.
Tyvar's emblem triggers, causing the Fyndhorn Elves spell to gain haste, and you to draw two cards.
Fyndhorn Elves enters the battlefield, triggering Cloudstone Curio, returning Elvish Mystic from the battlefield to your hand.
Activate Fyndhorn Elves by tapping it, adding {G}.
Repeat from step 5.

Combos with "Tyvar Kell"