Lithatog + Lumra, Bellow of the Woods + Port of Karfell + Tiller Engine

UBRG identity

Commander legal

The 4 combo pieces

• Lithatog
• Lumra, Bellow of the Woods
• Port of Karfell
• Tiller Engine

What must be in place

Lands you control excluding Port of Karfell can tap to produce at least {3}{U}{B}{B}.

How to execute it

1. Activate any number of other lands you control by tapping them, adding at least {3}{U}{B}{B}.
2. Activate Lithatog's second ability by sacrificing a land other than Port of Karfell, giving it +1/+1 until end of turn.
3. Repeat step 2 until you control no other lands except Port of Karfell.
4. Activate Port of Karfell's second ability by paying {3}{U}{B}{B}, tapping and sacrificing it, causing you to mill four cards and return Lumra from your graveyard to the battlefield tapped.
5. Lumra enters the battlefield and dies as a state-based action due to having 0 toughness.
6. Lumra's enter-the-battlefield ability triggers, causing you to mill four cards and return all land cards from your graveyard to the battlefield tapped.
7. When the lands enter the battlefield, Tiller Engine triggers that many times, untapping the lands.
8. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite landfall triggers
• Infinite mana lands you control can produce
• Infinite sacrifice triggers
• Infinite self-mill
• Infinitely large creature until end of turn
• Put all land cards from your library and graveyard onto the battlefield