You control a Shard that doesn't have summoning sickness.
Notable Prerequisites
You have the city's blessing.
Mana Needed
({1} magic symbol) ({U} magic symbol) plus ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) each turn available.
Steps
Activate
Niko by paying ({2} magic symbol) 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} magic symbol) ({U} magic symbol) ({U} magic symbol) , tapping it and putting it from the battlefield onto the bottom of your library, causing you to take an extra turn after this one.
Activate
Niko by paying ({1} magic symbol) ({U} magic symbol) , bling it.
When
Niko enters, it and
Deadeye Navigator's soulbond ability trigger.
Resolve the
Niko trigger, creating two Shard tokens.
Resolve the
Deadeye Navigator trigger, repairing it and
Niko.
At the beginning of the next end step,
Timestream Navigator is returned from exile to the battlefield.