Activate Staff of Eden by tapping it, causing you to draw at least one card.
Activate Mind Over Matter by discarding a card, untapping Staff of Eden.
Repeat.

Infinite self-discard triggers

Infinite draw triggers

Infinite looting

Near-infinite card draw

Near-infinite untap of permanents you control

Near-infinite mana permanents you control can produce

Mind Over Matter

Staff of Eden, Vault's Key

Cast Moritte of the Frost from your hand or from the command zone by paying {2}{G}{U}{U} plus commander tax, if applicable, choosing to have it enter the battlefield as a copy of Staff of Eden.
Put Moritte of the Frost into your graveyard due to the legend rule.
Morrite of the Frost's enters-the-battlefield ability and Marit Lage's Slumber's first ability trigger.
Resolve the Marit Lage Slumber trigger, causing you to scry 1.
Resolve the Moritte of the Frost trigger, returning Moritte of the Frost from your graveyard to the battlefield as a copy of Staff of Eden.
Repeat from step 2.

Infinite scry 1

Moritte of the Frost

Marit Lage's Slumber

Cast Moritte of the Frost from your hand or from the command zone by paying {2}{G}{U}{U} plus commander tax, if applicable, choosing to have it enter the battlefield as a copy of Staff of Eden.
Put Moritte of the Frost into your graveyard due to the legend rule.
Morrite of the Frost's enters-the-battlefield ability and Simulacrum Synthesizer's second ability trigger.
Resolve the Simulacrum Synthesizer trigger, creating a 0/0 Construct artifact creature token.
Resolve the Moritte of the Frost trigger, returning Moritte of the Frost from your graveyard to the battlefield as a copy of Staff of Eden.
Repeat from step 2.

Infinite ETB

Infinite creature tokens

Infinitely large Construct tokens

Simulacrum Synthesizer

Cast Moritte of the Frost from your hand or from the command zone by paying {2}{G}{U}{U} plus commander tax, if applicable, choosing to have it enter the battlefield as a copy of Staff of Eden.
Put Moritte of the Frost into your graveyard due to the legend rule.
Morrite of the Frost's enters-the-battlefield ability and Kappa Cannoneer trigger.
Resolve the Kappa Cannoneer trigger, putting a +1/+1 counter on it and causing it to be unblockable this turn.
Resolve the Moritte of the Frost trigger, returning Moritte of the Frost from your graveyard to the battlefield as a copy of Staff of Eden.
Repeat from step 2.

Infinite +1/+1 counters on Kappa Cannoneer

Kappa Cannoneer

Cast Moritte of the Frost from your hand or from the command zone by paying {2}{G}{U}{U} plus commander tax, if applicable, choosing to have it enter the battlefield as a copy of Staff of Eden.
Put Moritte of the Frost into your graveyard due to the legend rule.
Morrite of the Frost's enters-the-battlefield ability and Gonti's Aether Heart trigger.
Resolve the Gonti's Aether Heart trigger, causing you to get {E}{E}.
Resolve the Moritte of the Frost trigger, returning Moritte of the Frost from your graveyard to the battlefield as a copy of Staff of Eden.
Repeat from step 2.

Infinite energy counters

Gonti's Aether Heart

Cast Moritte of the Frost from your hand or from the command zone by paying {2}{G}{U}{U} plus commander tax, if applicable, choosing to have it enter the battlefield as a copy of Staff of Eden.
Put Moritte of the Frost into your graveyard due to the legend rule.
Morrite of the Frost's enters-the-battlefield ability and Transplant Theorist trigger.
Resolve the Transplant Theorist trigger, allowing you to loot.
Resolve the Moritte of the Frost trigger, returning Moritte of the Frost from your graveyard to the battlefield as a copy of Staff of Eden.
Repeat from step 2.

Transplant Theorist

Cast Moritte of the Frost from your hand or from the command zone by paying {2}{G}{U}{U} plus commander tax, if applicable, choosing to have it enter the battlefield as a copy of Staff of Eden.
Put Moritte of the Frost into your graveyard due to the legend rule.
Morrite of the Frost's enters-the-battlefield ability and Teething Wurmlet trigger.
Resolve the Teething Wurmlet trigger, causing you to gain 1 life.
Resolve the Moritte of the Frost trigger, returning Moritte of the Frost from your graveyard to the battlefield as a copy of Staff of Eden.
Repeat from step 2.

Infinite lifegain triggers

Infinite lifegain

Teething Wurmlet

Cast Moritte of the Frost from your hand or from the command zone by paying {2}{G}{U}{U} plus commander tax, if applicable, choosing to have it enter the battlefield as a copy of Staff of Eden.
Put Moritte of the Frost into your graveyard due to the legend rule.
Morrite of the Frost's enters-the-battlefield ability and Arcbound Crusher trigger.
Resolve the Arcbound Crusher trigger, putting a +1/+1 counter on it.
Resolve the Moritte of the Frost trigger, returning Moritte of the Frost from your graveyard to the battlefield as a copy of Staff of Eden.
Repeat from step 2.

Combos with "Staff of Eden, Vault's Key"