How can you create a combo with Mayael's Aria, Ancient Imperiosaur?
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[START OF COMBO]This combo can be formed with Mayael's Aria, Ancient Imperiosaur

Color identity: RGW
Mana cost: 
Steps:
  1. Cast Ancient Imperiosaur by tapping seven untapped creatures you control, two of which must be green.
  2. Ancient Imperiosaur enters the battlefield with fourteen +1/+1 counters on it.
  3. At the beginning of your next upkeep, Mayael's Aria triggers, causing you to put a +1/+1 counter on each creature you control, gain ten life, and win the game.[END OF COMBO STEPS]

Result:
  - Win the game at the beginning of your next upkeep[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Mayael's Aria must be on the battlefield
  - Ancient Imperiosaur must be in your hand
  - You control at least seven untapped creatures, two or which are green.
[END OF COMBO PREREQUISITES]
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