Athreos, Shroud-Veiled | Ugin's Nexus | Karn, the Great Creator
(and two other cards)
Color Identity: W, U, B
Initial Card State
- All permanents on the battlefield.
Notable Prerequisites
- Master Transmuter does not have summoning sickness.
Mana Needed
the first turn, with 
available each extra turn available.
Steps
- Activate Karn's first loyalty ability by putting a loyalty counter on it, causing Ugin's Nexus to become an artifact creature until end of turn.
- At the beginning of your end step, Athreos' second ability triggers, putting a coin counter on Ugin's Nexus.
- Activate Krark-Clan Ironworks by sacrificing Ugin's Nexus, adding
. - Ugin's Nexus is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
- Athreos' third ability triggers, causing you to return Ugin's Nexus from exile to the battlefield.
- Activate Master Transmuter by paying , tapping it and returning Ugin's Nexus to your hand, choosing to not put an artifact onto the battlefield.
- Move to your extra turn.
- Cast Ugin's Nexus by paying .
- Repeat.
Results
- Infinite turns.
