How can you create a combo with Purphoros, God of the Forge, Tainted Strike, Myr Battlesphere?
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[START OF COMBO]This combo can be formed with Purphoros, God of the Forge, Tainted Strike, Myr Battlesphere

Color identity: BR
Mana cost: {7}{B}
Steps:
  1. Cast Tainted Strike by paying {B}, giving Purphoros +1/+0 and infect until end of turn.
  2. Cast Myr Battlesphere by paying {7}.
  3. When Myr Battlesphere enters the battlefield, it and Purphoros trigger.
  4. Resolve the Myr Battlesphere trigger, creating four 1/1 Myr artifact creature tokens.
  5. When the Myrs enter the battlefield, Purphoros triggers four times.
  6. Resolve all Purphoros triggers, causing each opponent to get ten poison counters.
  7. Each opponent loses the game due to having ten or more poison counters.[END OF COMBO STEPS]

Result:
  - Each opponent loses the game[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Purphoros, God of the Forge must be on the battlefield
  - Tainted Strike must be in your hand
  - Myr Battlesphere must be in your hand
[END OF COMBO PREREQUISITES]
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