plus minus for each creature and artifact you control each turn available.
Steps
Activate
Spark Double using
Avatar Kuruk's ability by paying minus for each creature and/or artifact you can tap while activating it, causing you to take an extra turn after this one.
Activate
Baboon Spirit by paying , exiling
Spark Double.
At the beginning of your end step,
Baboon Spirit triggers, returning
Spark Double from exile to the battlefield. Choose to have it enter the battlefield as a copy of
Avatar Kuruk.
Repeat each turn.
Results
Infinite turns.
Metadata
Lock
Bracket tag
RuthlessBracket 4+
For competitive decks at brackets 4+
1
2
3
4
5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.