Timestream Navigator [Rivals of Ixalan]

Description

Set:	Rivals of Ixalan
Type:	Creature — Human Pirate Wizard
Rarity:	Mythic
Cost:	{1}{U}

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)
{2}{U}{U}, {T}, Put Timestream Navigator on the bottom of its owner's library: Take an extra turn after this one. Activate this ability only if you have the city's blessing.