Timestream Navigator is a Magic: The Gathering card, a mythic rare blue creature from The Lost Caverns of Ixalan Commander (LCC), a Commander product released in November 2023. It is collector number 178 in that set, with art by Zezhou Chen. It costs {1}{U} (one generic and one blue mana) to cast, for a mana value of 2. It is a 1/1 creature. Its colour identity is blue. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, Duel Commander, Oathbreaker, Brawl, Historic, Timeless, Gladiator and Penny Dreadful. It has been printed in 3 sets, from Rivals of Ixalan (2018) to The Lost Caverns of Ixalan Commander (2023). The latest aggregated market price for this printing is $0.53 (normal finish, as of 2026-11-11).
Card text
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 this creature on the bottom of its owner's library: Take an extra turn after this one. Activate only if you have the city's blessing.
Market price
Latest aggregated market price for the normal finish of this printing: $0.53 (as of 2026-11-11).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Timestream Navigator by format. Formats in which it is not legal are not listed.
Timestream Navigator has been printed in 3 sets. The other printings are listed newest first, with the rarity and release year of each.
Printing
Rarity
Year
Rivals of Ixalan Promos (PRIX) #59s
Mythic
2018
Rivals of Ixalan (RIX) #59
Mythic
2018
Official rulings
Six official rulings apply to Timestream Navigator, newest first.
A permanent is any object on the battlefield, including tokens and lands. Spells and emblems aren't permanents.
If you cast a spell with ascend, you don't get the city's blessing until it resolves. Players may respond to that spell by trying to change whether you get the city's blessing.
Once you have the city's blessing, you have it for the rest of the game, even if you lose control of some or all of your permanents. The city's blessing isn't a permanent itself and can't be removed by any effect.
Ascend on a permanent isn't a triggered ability and doesn't use the stack. Players can respond to a spell that will give you your tenth permanent, but they can't respond to getting the city's blessing once you control that tenth permanent. This means that if your tenth permanent is a land you play, players can't respond before you get the city's blessing.
If your tenth permanent enters the battlefield and then a permanent leaves the battlefield immediately afterwards (most likely due to the "Legend Rule" or due to being a creature with 0 toughness), you get the city's blessing before it leaves the battlefield.
If you control ten permanents but don't control a permanent or resolving spell with ascend, you don't get the city's blessing. For example, if you control ten permanents, lose control of one, then cast Golden Demise, you won't have the city's blessing and the spell will affect creatures you control.
Similar cards
Other creature cards with a blue colour identity, ranked by how often they appear in Commander decks.