The effect of "Spirit Word: Gate" was not creation, but "connection" and "passage."
It could not create a door out of nothing, but it could sense and forcibly pry open existing "cracks" and "paths" in space.
These "cracks" might be an actual wooden door, a mirror, or even the invisible "gap" between two ancient trees leaning against one another.
During the brief period the Spirit Word was active, Amon could do the following:
Forced passage. Ignoring a door's physical locks or simple seals, he could directly treat it as "open" in concept and pass through it. It might also have a faint effect on certain low-stability Nibelungen entrances that relied on real objects for their existence, though the outcome depended heavily on the gap in strength between both sides and the state of the entrance itself.
Short-range connection. He could establish an extremely brief one-way passage between two similar "doors"—similar in material, shape, or symbolic meaning—to achieve an effect akin to teleportation. But the distance was extremely short, the cost immense, and the requirements for the doors' material and stability stringent.
Peering through cracks. Before a sealed door he could not pass through, he could briefly extend his consciousness through the concept of the "door," sensing the exceedingly vague aura and movements on the other side, as though peering through a keyhole.
"Spirit Word: Gate" did not possess the mighty power to directly control space. It was more like a versatile and cunning key, a lever made specifically to pry open "boundaries."
It suited Amon's style perfectly... Rather than relying on overwhelming force, he sought loopholes in the rules and heard thunder in silence.
Amon slowly raised his hand and stared at his fingertips. He could feel the laws concerning "doors" and "paths" already branded deep into his bloodline like