Requires

Lumbering Battlement must be on the battlefield. Felidar Guardian must be in exile (exiled by Lumbering Battlement). Deadeye Navigator must be on the battlefield. Deadeye Navigator is paired with Lumbering Battlement. Mana needed:

Steps

1. Activate Lumbering Battlement by paying , blinking itself.
2. Lumbering Battlement leaves the battlefield, causing Felidar Guardian to return to the battlefield.
3. Felidar Guardian and Lumbering Battlement enter the battlefield, triggering Felidar Guardian's ability, Lumbering Battlement's ability, and Deadeye Navigator's ability twice.
4. Resolve both Deadeye Navigator triggers, choosing not to pair.
5. Resolve the Lumbering Battlement trigger, exiling Felidar Guardian until Lumbering Battlement leaves the battlefield.
6. Resolve the Felidar Guardian trigger, blinking Lumbering Battlement.
7. Repeat from step 2.

Results