Guild Wars 2

I’ve been working on my tempered spinal blades and eventually want to raise them to the next level after I get them.

So, how do I get assault knight power cores? It looks like, from the wiki, that they’re only available from a living world instance (that I don’t think I have).

Buy em. They’re no longer obtainable via any other method due to them being from LS1.

Only available from the trading post atm.

Very recently a thread arose talking about this topic. Effectively, they are a finite resource as you can no longer obtain them as far as I know, so the price will keep rising. I do recommend you read the thread I have linked above, as it gives answers better than I can say.