Color Identity: C

Initial Card State
- Gonti's Aether Heart in exile (exiled by Prototype Portal).
- All other permanents on the battlefield.
Notable Prerequisites
- Eleven generic mana available each turn.
Steps
- Activate Prototype Portal by paying ({6} magic symbol)
and tapping it. - In response, activate Lithoform Engine by paying ({2} magic symbol)
and tapping it, copying Prototype Portal's activated ability. - Activate Voltaic Key by paying ({1} magic symbol)
and tapping it, untapping Lithoform Engine. - activate Lithoform Engine by paying ({2} magic symbol)
and tapping it, copying Prototype Portal's activated ability again. - Resolve one Prototype Portal ability, creating a token copy of Gonti's Aether Heart.
- Gonti's Aether Heart triggers, adding ({E} magic symbol)
({E} magic symbol)
. - Resolve a second Prototype Portal ability, creating a token copy of Gonti's Aether Heart.
- Put one of the Gonti's Aether Heart tokens into the graveyard due to the legend rule.
- Both Gonti's Aether Heart copies trigger, adding a total of ({E} magic symbol)
({E} magic symbol)
({E} magic symbol)
({E} magic symbol)
. - Resolve the last Prototype Portal ability, creating a token copy of Gonti's Aether Heart.
- Put one of the Gonti's Aether Heart tokens into the graveyard due to the legend rule.
- Both Gonti's Aether Heart copies trigger, adding a total of ({E} magic symbol)
({E} magic symbol)
({E} magic symbol)
({E} magic symbol)
. - Activate the Gonti's Aether Heart token by paying eight ({E} magic symbol)
and exiling it, causing you to take an extra turn after this one. - Repeat each turn.
Bracket Tag
This combo has been estimated to be Ruthless (Bracket 4+).