So, while tabletop rpg gaming, what is a mechanical combo you've come across that made you go, "Wait...wtf? It can't really do what I think it does, can it?!"
Here is mine:
Be a level 1 Aegis in Pathfinder 1e.
Use 2 Customization Points for your Astral Suit to pick up the 'Robot Upgrade(Source: Arcforge: Psibertech)
For each time that the Aegis selects this customization, he gains 1 Upgrade point. These upgrade points can be spent on robot upgrades. This customization may be taken multiple times.' customization.
Use that Robot Upgrade to pick up 'Mech Enhancement(Source: Arcforge: Psibertech)
The robot gains a single mech enhancement that it meets the prerequisites for, using its hit dice as the effective mech pilot level.'.
Now pick up 'Transformation(Source: Spheres of Power)
The mech or vehicle can take on a different form. When you can this customization, choose one mech or vehicle body type and a new set of mech enhancements (although this new form must possess transformation). The mech may exchange its body type and enhancements (besides transformation) for this other body type or revert to its original form as a full-round action, altering its stats as dictated by its new form. A mech may use this enhancement to take on a vehicle body type and vice versa. If a mech’s transformed form has fewer weapon slots than its original form or vise versa, those excess slots are unusable while in the form with fewer slots. This enhancement can be selected multiple times, each time allowing the mech an additional body type it can transform into.' as your Mech Enhancement.
Congrats! Now you can form your astral suit in order to shapeshift into a mech or vehicle, with the ability to cycle through them at-will as a full round action. Be a mech and be vaguely odd, but still a bepedal medium human-shaped character, or go full hog and be a sentient Gargantuan Ship. Pick up another customization point, give yourself flying and be your own airship. Dismiss your Astral Suit to revert to normal.
More customization points down the line allow you to get actual weapon slots via picking up the 'Additional Weapon AffinityThe mech gains Weapon Affinity with an additional weapon type of your choice (melee, ranged, heavy). This enhancement can be taken up to two times, selecting a different weapon type each time.' Mech Enhancement to pick up a general weapon proficiency like 'Ranged' or 'Heavy' and then generate them via the 'Weapon Emulation(Source: Arcforge: Psibertech)
The aegis gains the ability to forge out of ectoplasm a weapon based upon an installed emulation program. The weapon can be generated, reloaded, or retracted as a swift action, and can be reformed if sundered. The weapon is a part of the astral suit, and so cannot be thrown or otherwise detached from the suit. Any ability or effect that suppresses or destroys the astral suit also does the same to this weapon.' astral suit customization. Now you can be your own airship with an automatically reloading Rocket Launcher. All for 8 Customization Points, which can be done at level 1 with the right archetypes, feats, and traits.
Autobots, roll out!