Although the ninjutsu ability has the creature enter the battlefield attacking, it was never declared as an attacking creature (for the purposes of abilities that trigger whenever a creature attacks, for example)
Ripjaw Raptor A creature that draws cards when it deals damage
Its also the only sphinxtribal commander on the list
Dont Move is a huge tempo reset, because not only does it wipe the board of a bunch of creatures, it also makes it much harder for opponents to attack at all in the ensuing turn cycle
The best part is that Satoru Umezawa offers all creatures in your hand ninjutsu if they don't already have it, providing more opportunities to throw your opponents off in combat
My main suggestion if youre going to build a cleric tribal deck with Orah, Skyclave Hierophant is to include plenty of payoff and game-ending cards