Don & Leo, Problem Solvers + Timestream Navigator Combos

2 known combos featuring both cards in Commander

Infinite turns Lock

Combo 1 with Niko, Light of Hope

Also requires:

Results: Infinite turns · Lock

Steps

Activate Niko by paying {2} and tapping it, exiling Timestream Navigator and causing Shards you control to become a copy of Timestream Navigator until the end step.
Activate a Shard by paying {2}{U}{U}, tapping it and putting it from the battlefield onto the bottom of your library, causing you to take an extra turn after this one.
At the beginning of the next end step, Timestream Navigator is returned from exile to the battlefield. Don & Leo then triggers, blinking Niko.
When Niko enters, it triggers, creating two Shard tokens.
Repeat each turn.

1 decks Colorless View on Commander Spellbook →

Also requires:

Results: Infinite turns · Lock

Show steps

Activate Timestream Navigator by paying {2}{U}{U}, tapping and putting it on the bottom of your library, causing you to take an extra turn after this one.
At the beginning of your end step, Don & Leo triggers, blinking Forerunner of the Coalition.
Forerunner of the Coalition enters, triggering its first ability, causing you to search your library for Timestream Navigator and put it on top of your library.
Move to your next turn, drawing Timestream Navigator during your draw phase.
Cast Timestream Navigator by paying {1}{U}.
Timestream Navigator enters the battlefield, triggering Forerunner of the Coalition's second ability, causing each opponent to lose 1 life.
Repeat.

Colorless View on Commander Spellbook →

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Combo

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