Color Identity: G

Initial Card State
- All permanents on the battlefield.
Notable Prerequisites
- "Green" chosen with Caged Sun.
- Caged Sun does not have summoning sickness.
Mana Needed
- ({1} magic symbol)
available.
Steps
- Activate Karn by paying ({1} magic symbol)
, causing Caged Sun to become an artifact creature until end of turn. - Activate Caged Sun by tapping it, adding ({G} magic symbol)
. - Caged Sun triggers, adding ({G} magic symbol)
. - Repeat step 2.
- As Caged Sun's triggered ability is a mana ability, this combo creates a mandatory infinite loop that cannot be interacted with, thus ending the game in a draw.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).