How can you create a combo with Fool's Demise, Channel, Phyrexian Altar, Thragtusk?
user
[START OF COMBO]This combo can be formed with Fool's Demise, Channel, Phyrexian Altar, Thragtusk

Color identity: GU
Mana cost: {G}{G}
Steps:
  1. Cast Channel by paying {G}{G}.
  2. Activate Phyrexian Altar by sacrificing Thragtusk, adding {U}.
  3. When Thragtusk dies, its second ability and Fool's Demise's first and second abilities trigger.
  4. Resolve the Thragtusk trigger, creating a 3/3 Beast creature token.
  5. Resolve the first Fool's Demise trigger, returning Thragtusk from your graveyard to the battlefield.
  6. When Thragtusk enters the battlefield, its first ability triggers, causing you to gain 5 life.
  7. Resolve the second Fool's Demise trigger, returning it from your graveyard to your hand.
  8. Activate Channel four times by paying 4 life, adding {C}{C}{C}{C}.
  9. Cast Fool's Demise by paying {4}{U}, attaching it to Thragtusk.
  10. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite colorless mana
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite lifegain
  - Infinite lifegain triggers
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Fool's Demise must be on the battlefield
  - Channel must be in your hand
  - Phyrexian Altar must be on the battlefield
  - Thragtusk must be on the battlefield
  - Fool's Demise attached to Thragtusk.
[END OF COMBO PREREQUISITES]
assistant