If you don't have the city's blessing and control ten or more permanents,
Timestream Navigator gives you the city's blessing.
When
Timestream Navigator enters the battlefield,
Flameshadow Conjuring triggers, causing you to pay ({R} magic symbol) to create a token copy of
Timestream Navigator with haste.
If you don't have the city's blessing, the
Timestream Navigator token gives you the city's blessing.
Activate Crystal Shard by paying ({3} magic symbol) or ({U} magic symbol) and tapping it, returning the nontoken
Timestream Navigator to your hand from the battlefield.
Activate the
Timestream Navigator token by paying ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) , tapping it and putting it on the bottom of your library from the battlefield, causing you to take an extra turn after this one.