Uro, Titan of Nature's Wrath + Gwenna, Eyes of Gaea + Myth Unbound + Mirage Mirror + Ashnod's Altar

Prerequisites

• Gwenna does not have summoning sickness.

Steps

1. 1Activate Mirage Mirror by paying , causing it to become a copy of Myth Unbound until end of turn.
2. 2Activate Gwenna by tapping it, adding that can only be spent to cast creature spells or activate abilities of creatures.
3. 3Cast Uro from the command zone by paying .
4. 4Gwenna triggers, putting a +1/+1 counter on it and untapping itself.
5. 5Uro enters the battlefield, triggering its first and second abilities.
6. 6Holding priority, activate Ashnod's Altar by sacrificing Uro, adding .
7. 7Choose to return Uro to the command zone from your graveyard.
8. 8Myth Unbound and Mirage Mirror each trigger, causing you to draw two cards.
9. 9Resolve the first Uro trigger, causing you to not sacrifice Uro due to it no longer being on the battlefield.
10. 10Resolve the second Uro trigger, causing you to gain three life, draw a card, and put any land from your hand onto the battlefield.
11. 11Repeat from step 2.

Effects

• Infinite card draw
• Infinite draw triggers
• Near-infinite +1/+1 counters on a creature
• Near-infinite colorless mana
• Near-infinite commander casts
• Near-infinite creature ETB
• Near-infinite creature LTB
• Near-infinite creature sacrifice triggers
• Near-infinite death triggers
• Near-infinite landfall triggers
• Near-infinite lifegain
• Near-infinite lifegain triggers
• Near-infinite storm count
• Put all lands from your hand and library onto the battlefield