Phantom Shot
Vanishing Drive
Meteor Jam
Vice Claw
Hawk Eye
Eagle Eye
Eagle Spear
Emperor's Eye
ad nauseam.
This hasn't been a basketball manga in a loooong time. At first, they kept these special abilities were SOMEWHAT believable. I mean, it took some considerable suspension of disbelief, but hey, it worked. The MC, a kid with next to no presence who was good at basketball was actually a good concept. Since the first chapter though, it's as if the author said, "Fuck it. Basketball got boring. Let's make this into a quasi shounen battle manga" - cause that's what it looks like now.
Honestly, how did this ever get so popular? Eyeshield 21 was classy about it. The abilities in that were interesting and they worked. KNB just took the concept and made it flat out ridiculous (and the author copied Kuroko's ability from ES21).
It's an unpopular opinion perhaps, but I had to kind of vent.
Also, watch Seiren beat Rakuzan despite it all. The plot protection in this manga is ridiculous.
The author is simply giving "exciting" names to techniques/things that are already done/used in basketball today. It is simply embellishing what already exists for the audience. However the author isn't always going to completely explain them or it might take away from the mysteirous feel/awe. Using special techniques is a hallmark of managa, especially shounen, so the author will use them even if they are simply plays off of what people in the pros use.
-Phantom Shot Shot=Kuroko uses two hands as part of the layup (which traditionally uses only one hand), if you look at chapter 148, one hand is underneath the ball, while the other is one top/to the side of the ball. The positioning of his hands is actually the form as if one was shooting a jump shot/three pointer/any distance shot. Kuroko jumps and then shoots the the ball with such a high arc that it goes way too high/out of sigh (thus disappearing). Jump shots have arc, kuroko just does it so close to the rim and high arcing.
-Vanishing Drive=making use of blind spots. Kagami draws some attention and kuroko switches up which way he might go.
-Meteor Jam=simply dunking it while jumping from foul line, can happen and does in real basketball.
-Vice Claw=hand is big enough to grab the basketball easily and grip it with that one hand
-hawk Eye/Eagle Eye=enough court awareness to prevent situations, this is a must for good players, though some are better at it then most
-Eagle Spear=simply using the awareness mentioned to steal/knock the ball away from someone who didn't think the aware person was close enough/paying attention
-Emperor's Eye=reading the body movement of enemy players to act in accordance against what the enemy can/intends to do, this is like in boxing where they say don't watch the hand, but watch the shoulders. Not something you typically think about using in basketball, thus the wonderment of other players over it.
There all explained for, all real. If you need other techniques explained, then simply post which and I will do my best.
As far as plot armor, dunno, I mean even I don't know how seiren can win against razukan as they are, but we will see what happens.