The Hand of the Nexus

Travel through a portal with these glyphs.
Save the game here and load that save.
Without loading another save, go to the coordinates shown in the card and buy the tool from the weapon cabinet in the shop.
Build a Communications Station here to leave a mark for other travellers.

This one lies below class S, and its slots stay when you upgrade it: how to upgrade a multitool says what else changes.

Found one of your own? How lucky am I? scores it from 0 to 100.