"unreactable teleport" brother, as a wizard main, i find it very easy to read cowboy players. they'll try to get into teleport range and then teleport behind you; I usually do either the storm in the same frame they teleport so it catches them as they come in, or I spawn a projectile beforehand so if they try to teleport, they'll immediately get hit. I'm sure the ninja has similar counter options; just always be aware of who youre fighting against and you'll be good