Cast Leashling by paying {0}.
Vedalken Archmage triggers, causing you to draw a card.
Activate Leashling by putting a card from your hand on top of your library, returning Leashling to your hand from the battlefield.
Repeat.

Infinite draw triggers

Infinite ETB

Infinite LTB

Infinite storm count

Leashling

Mycosynth Golem

Vedalken Archmage

Cast Leashling by paying {0}.
Vanquisher's Banner triggers, causing you to draw a card.
Activate Leashling by putting a card from your hand on top of your library, returning Leashling to your hand from the battlefield.
Repeat.

Vanquisher's Banner

Cast Leashling by paying {0}.
Beast Whisperer triggers, causing you to draw a card.
Activate Leashling by putting a card from your hand on top of your library, returning Leashling to your hand from the battlefield.
Repeat.

Beast Whisperer

Cast Leashling by paying {0}.
Leashling enters the battlefield, triggering The Great Henge, putting a +1/+1 counter on it and causing you to draw a card.
Activate Leashling by putting a card from your hand on top of your library, returning Leashling to your hand from the battlefield.
Repeat.

The Great Henge

Cast Leashling by paying {0}.
Leashling enters the battlefield, triggering Guardian Project, causing you to draw a card.
Activate Leashling by putting a card from your hand on top of your library, returning Leashling to your hand from the battlefield.
Repeat.

Guardian Project

Cast Leashling by paying {0}.
Leashling enters the battlefield, triggering Elemental Bond, causing you to draw a card.
Activate Leashling by putting a card from your hand on top of your library, returning Leashling to your hand from the battlefield.
Repeat.

Elemental Bond

Move to your draw step, drawing Approach of the Second Sun and revealing it due to God-Eternal Kefnet's ability.
Resolve God-Eternal Kefnet's trigger, copying Approach of the Second Sun and casting the copy from your hand by paying {4}{W}.
Sunbird's Invocation triggers.
In response, activate Leashling by putting Approach of the Second Sun on top of your library, returning Leashling to its owner's hand.
Resolve the Sunbird's Invocation trigger, revealing the top seven cards of your library, casting Approach of the Second Sun without paying its mana cost, then putting the rest of the revealed cards on the bottom of your library.
Resolve Approach of the Second Sun, putting it back into your library seventh from the top and gaining you 7 life.
Resolve the remaining copy of Approach of the Second Sun.

Win the game

Approach of the Second Sun

Sunbird's Invocation

God-Eternal Kefnet

Cast Leashling by paying {0}.
When Leashling enters the battlefield, Garruk's Packleader triggers, causing you to draw a card.
Activate Leashling by putting a card from your hand on top of your library, returning Leashling to your hand from the battlefield.
Repeat.

Garruk's Packleader

Cast Leashling by paying {0}.
Leashling enters the battlefield, triggering Kindred Discovery, causing you to draw a card.
Activate Leashling by putting a card from your hand on top of your library, returning Leashling to your hand from the battlefield.
Repeat.

Kindred Discovery

Cast Rite of Harmony by paying {G}{W}, causing you to draw a card whenever a creature or enchantment enters the battlefield under your control this turn.
Cast Leashling by paying {0}.
Leashling enters the battlefield, triggering Rite of Harmony, causing you to draw a card.
Activate Leashling by putting a card from your hand on top of your library, returning Leashling to your hand from the battlefield.
Repeat.

Rite of Harmony

Cast Leashling by paying {6}.
When Leashling enters the battlefield, Dual Nature's first ability triggers, creating a token copy of Leashling.
Cast Etali either from your hand or from the command zone by paying {5}{R}{R} plus commander tax, if applicable.
When Etali enters the battlefield, it, Dual Nature's first ability and Cloudstone Curio trigger.
Resolve the Cloudstone Curio trigger, choosing not to return anything to your hand.
Resolve the Dual Nature trigger, creating a token copy of Etali.
Put the token Etali into your graveyard due to the legend rule.
The token Etali and Cloudstone Curio trigger.
Resolve the Cloudstone Curio trigger, returning Etali from the battlefield to your hand.
When Etali leaves the battlefield, Dual Nature's second ability triggers, doing nothing.
Activate the nontoken Leashling by putting Etali on top of your library from your hand, returning Leashling to your hand from the battlefield.
When the nontoken Leashling leaves the battlefield, Dual Nature's second ability triggers.
Holding priority, activate the token Leashling by putting Leashling on top of your library from your hand, returning the token Leashling to your hand from the battlefield.
Resolve the Dual Nature trigger, doing nothing.
Resolve the token Etali's trigger from step 8, causing each player to exile cards from the top of their library until they exile a nonland card, and allowing you to cast the nonland cards without paying their mana costs, with you casting Leashling from your library.
When Leashling enters the battlefield, Dual Nature's first ability triggers, creating a token copy of Leashling.
Resolve the nontoken Etali's trigger from step 4, causing each player to exile cards from the top of their library until they exile a nonland card, and allowing you to cast the nonland cards without paying their mana costs, with you casting Etali from your library.
Repeat from step 4.

Combos with "Leashling"