How can you create a combo with Elbrus, the Binding Blade // Withengar Unbound, Triskelion, Agatha's Soul Cauldron, Tainted Strike?
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[START OF COMBO]This combo can be formed with Elbrus, the Binding Blade // Withengar Unbound, Triskelion, Agatha's Soul Cauldron, Tainted Strike

Color identity: B
Mana cost: {B}
Steps:
  1. Cast Tainted Strike by paying {B}, giving Withengar Unbound +1/+0 and infect until end of turn.
  2. Deal combat damage to an opponent using Withengar Unbound, causing them to get at least ten poison counters.
  3. The opponent loses the game as a state-based action due to having ten or more poison counters.
  4. Withengar Unbound triggers, putting thirteen +1/+1 counters on it.
  5. Activate Withengar Unbound using Triskelion's ability by removing a +1/+1 counter from it, giving an opponent a poison counter.
  6. Repeat step 5 until the opponent loses the game as a state-based action due to having ten or more poison counters.
  7. Repeat from step 4.[END OF COMBO STEPS]

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

Other prerequisites:
  - Elbrus, the Binding Blade // Withengar Unbound must be on the battlefield
  - Triskelion must be exiled
  - Agatha's Soul Cauldron must be on the battlefield
  - Tainted Strike must be in your hand
  - Elbrus on the battlefield as Withengar Unbound.
  - Withengar Unbound does not have summoning sickness.
  - An opponent cannot block Withengar Unbound, or cannot prevent at least ten trample damage from Withengar Unbound.
  - Triskelion exiled by Agatha's Soul Cauldron.
[END OF COMBO PREREQUISITES]
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