Celestial Gatekeeper + Dual Nature + Phyrexian Altar

Prerequisites

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Steps

1. 1Cast Celestial Gatekeeper by paying .
2. 2Celestial Gatekeeper enters the battlefield, triggering Dual Nature's first ability, creating a token copy of Celestial Gatekeeper.
3. 3Activate Phyrexian Altar by sacrificing the nontoken Celestial Gatekeeper, adding .
4. 4Celestial Gatekeeper dies, triggering itself and Dual Nature's second ability.
5. 5In response, activate Phyrexian Altar by sacrificing the Celestial Gatekeeper token, adding .
6. 6The Celestial Gateekeeper token dies, triggering itself, exiling itself and returning Celestial Gatekeeper from your graveyard to the battlefield.
7. 7Celestial Gatekeeper enters the battlefield, triggering Dual Nature's first ability, creating a token copy of Celestial Gatekeeper.
8. 8Resolve the nontoken Celestial Gateekeeper's trigger, failing to exile itself and returning up to two more Birds and/or Clerics from your graveyard to the battlefield.
9. 9If you returned a creature this way, Dual Nature's first ability triggers, creating a token copy of that creature.
10. 10Repeat from step 3.
11. 11Resolve all triggers from Dual Nature's second ability, exiling all tokens with the same name as a creature card that left the battlefield during this combo.

Effects

• Infinite blinking of some creatures
• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers