Hello! So, in answer to the first question: Karkat would count as non-powered since trolls being trolls doesn't count as a power, just a species. This would include the fraymotifs as they're more a function of the Homestuck game canon mechanic rather than an actual measurable power.
As for the second question, I'm afraid neither the sylladex nor the strife deck would work as he'd like them to. The Hammerspace the items would usually disappear into will be cut off and limited to Panem's physics.
Sorry, wrong account!
As for the second question, I'm afraid neither the sylladex nor the strife deck would work as he'd like them to. The Hammerspace the items would usually disappear into will be cut off and limited to Panem's physics.