the front side of Karn, Legacy Reforged
the back of a classic MtG card
the front side of Karn, Silver Golem
the back of a classic MtG card
the front side of Lithoform Engine
the back of a classic MtG card
the front side of Voltaic Construct
the back of a classic MtG card

Color Identity: C

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. Lithoform Engine does not have summoning sickness.
  2. You control at least one additional artifact.

Mana Needed

  1. ({3} magic symbol)   available.

Steps

  1. At the beginning of your upkeep, Karn, Legacy Reforged triggers.
  2. Holding priority, activate Karn, Silver Golem by paying ({1} magic symbol)  , causing Lithoform Engine to become an artifact creature until end of turn.
  3. Activate Lithoform Engine's first ability by paying ({2} magic symbol)   and tapping it, copying Karn, Legacy Reforged's ability.
  4. Resolve the copy of Karn, Legacy Reforged's ability, adding ({C} magic symbol)   for each artifact you control that cannot be spent to cast nonartifact spells.
  5. Activate Voltaic Construct by paying ({2} magic symbol)  , untapping Lithoform Engine.
  6. Repeat from step 3.

Results

  1. Infinite colorless mana that cannot be spent to cast nonartifact spells.
  2. Infinite untap of artifact creatures you control.

Metadata

  1. In 141 decks according to EDHREC.
footer