the front side of Cayth, Famed Mechanist
the back of a classic MtG card
the front side of Mana Echoes
the back of a classic MtG card
the front side of Umbral Mantle
the back of a classic MtG card

Color Identity: U, R, W

Initial Card State

  1.  All permanents on the battlefield.

Easy Prerequisites

  1. Umbral Mantle attached to Cayth.

Notable Prerequisites

  1. You control at least one creature token.
  2. You control at least four creatures that share a creature type with the creature token.
  3. Cayth does not have summoning sickness.

Mana Needed

  1. two generic mana available.

Steps

  1. Activate Cayth by paying two generic mana and tapping it, creating a token copy of a creature token you control.
  2. When the creature token enters the battlefield, Mana Echoes triggers, adding one colorless mana for each creature you control that shares a creature type with it.
  3. Activate Cayth by paying three generic mana and untapping it, giving it +2/+2 until end of turn.
  4. Repeat.

Notes

  1. You may begin the combo with less creatures that share a type with the token, but you will need additional mana to do so until you begin to break even from Mana Echoes' trigger. Once you have infinite mana, you may instead use Cayth to get infinite proliferate.

Results

  1. Infinite creature ETB.
  2. Infinite colorless mana.
  3. Infinite proliferate.
  4. Infinite copies of creature tokens you control.
  5. Infinitely large creature until end of turn.
  6. Infinite untap of creatures you control.
  7. Infinite mana creatures you control can produce.

Metadata

Bracket tag
ExhibitionBracket 1+

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