Although the Ninja is attacking, it was never declared as an attacking creature (for purposes of abilities that trigger whenever a creature attacks, for example)
It might not be quite as good as the land-type-centric fetches like Scalding Tarn, but Fabled Passage has a huge advantage over other generic fetches thanks to its ability to have the lands enter untapped
Obviously meant for a token strategy, it can go infinite with the mana-adding ability if youre wanting to play that way, or it can just deliver a good old-fashioned beat down
Theres a good chance this sees Constructed play, but time will tell
it's an industry-recognised way to standardise quality and trust in the TCG (Trading Card Game) market
131 Elena, Turk Recruit* Elena doesnt want anything to do with Ezio and friends, but is a decent raise dead effect with a body that grows in legendary matters commander decks that she fits into