Guild Wars 2

I was looking to buy the ascended ring/amulet with laurel but couldn’t get a defiant answer if +5 Agony Infusion(or higher one) could be added to them. Douse the ascended item need an agony slot or can the +5 Agony Infusion be added to any of them?
Wanted to know before i bought any with laurels.

There is one type of infusion called the versatile agony infusion (+5 AR), sold by the golem in the fractal. This one can go to the utility, defensive, or offensive infusion slot of the ascended ring/amulet. If you infuse your ascended ring, an additional slot will appear which only accept the new agony infusion (dropped as +1 AR in fractal which you can combine them to make higher AR). Hope this clarify a bit for you.

You will get an infused version using the mystic forge: ascended ring + 1 shard + 3 globs + 5 vials of mist essences
The infused ring will have an empty slot for Agony infusion (no more +5 agony resistance coming with it). You can then slot whatever Agony Resist you need there.

So i need to get an infused ring to atully use the +5 Agony Infusion(or higher one)?

Ah ok, now i understand better. Thank you.