Havi, the All-Father + Saffi Eriksdotter + Uro, Titan of Nature's Wrath
Havi, the All-Father
Saffi Eriksdotter
Uro, Titan of Nature's Wrath
Requires
Havi, the All-Father must be on the battlefield.
Saffi Eriksdotter must be on the battlefield.
Uro, Titan of Nature's Wrath must be in hand.
Mana needed: 
Steps
- Cast Uro by paying .
- When Uro enters the battlefield, its first and second abilities trigger.
- Holding priority, activate Saffi by sacrificing it, targeting Uro.
- When Saffi dies, Havi triggers, returning any legendary creature card with mana value 1 or less from your graveyard to the battlefield.
- Resolve the Saffi ability.
- Resolve the second Uro trigger, causing you to gain 3 life and draw a card, and allowing you to put a land from your hand onto the battlefield.
- Resolve the first Uro trigger, causing you to sacrifice it.
- When Uro dies, Havi and Saffi trigger.
- Resolve the Havi trigger, returning Saffi from your graveyard to the battlefield.
- Resolve the Saffi trigger, returning Uro from your graveyard to the battlefield.
- Repeat from step 2.
Results
Infinite card draw. Near-infinite lifegain. Near-infinite lifegain triggers. Near-infinite ETB. Infinite draw triggers. Near-infinite landfall triggers. Near-infinite LTB. Near-infinite death triggers. Near-infinite sacrifice triggers. Put all land cards from your hand and library onto the battlefield.
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