How can you create a combo with Amoeboid Changeling, Avatar of Woe, Faces of the Past?
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[START OF COMBO]This combo can be formed with Amoeboid Changeling, Avatar of Woe, Faces of the Past

Color identity: UB
Mana cost: 
Steps:
  1. Activate Amoeboid Changeling's first ability by tapping it, giving Avatar of Woe all creature types until end of turn.
  2. Activate Avatar of Woe by tapping it, destroying target creature.
  3. When the creature dies, Faces of the Past triggers, untapping Avatar of Woe, Amoeboid Changeling and any other creatures that shared a creature type with it.
  4. Repeat from step 2 as desired.
  5. You may repeat this loop whenever a creature enters the battlefield under an opponent's control.
  6. You may also target another creature using Amoeboid Changeling after the first activation each turn to untap them when Faces of the Past's ability resolves.[END OF COMBO STEPS]

Result:
  - Destroy all creatures opponents control
  - Destroy all creatures that enter the battlefield under an opponent's control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Amoeboid Changeling and Avatar of Woe do not have summoning sickness.
[END OF COMBO PREREQUISITES]
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