How can you create a combo with Yenna, Redtooth Regent, Pattern of Rebirth, Ashnod's Altar?
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[START OF COMBO]This combo can be formed with Yenna, Redtooth Regent, Pattern of Rebirth, Ashnod's Altar

Color identity: GW
Mana cost: {2}
Steps:
  1. Activate Yenna by paying {2} and tapping it, creating a token copy of Pattern of Rebirth attached to any creature you control except the creature that has the nontoken Pattern of Rebirth attached to it, then untapping Yenna and causing you to scry 2.
  2. Activate Ashnod's Altar by sacrificing the creature that has the token copy of Pattern of Rebirth attached, adding {C}{C}.
  3. When the creature dies, Pattern of Rebirth triggers, causing you to search your library for a creature card and put it onto the battlefield.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Near-infinite death triggers
  - Near-infinite enters the battlefield
  - Near-infinite leaves the battlefield
  - Near-infinite sacrifice triggers
  - Near-infinite scry 2[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control at least one additional creature that does not have Pattern of Rebirth attached to it.
  - Yenna does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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