You control at least seven permanents and/or have the city's blessing.
Mana Needed
available the first turn, with each following turn available.
Steps
Cast TImestream Navigator by paying , plus an additional for its offspring cost.
If you control ten or more permanents and don't have the city's blessing,
Timestream Navigator gives you the city's blessing.
When
Timestream Navigator enters the battlefield, it triggers, creating a token copy of it that is 1/1.
If you control ten or more permanents and don't have the city's blessing, the
Timestream Navigator token gives you the city's blessing.
Activate
Meticulous Excavation by paying , returning the nontoken
Timestream Navigator from the battlefield to your hand.
During your next turn, repeat steps 1 through 5 one additional time.
Activate the oldest
Timestream Navigator token by paying , tapping it and putting it from the battlefield onto the bottom of your library, causing you to take an extra turn after this one.
Repeat.
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.