Guild Wars 2

This may be a dumb question, but…

I got my first yellow piece of gear the other night and it is setup like this:

(1): +10 X
(2): +1% Y
(3): +15 X
(4): A when B for x seconds

However, only the first bonus is active (blue lettering) while 2-4 are grayed out. How do I activate the other bonuses? Are 2-4 set bonuses? If so, how do I go about getting the other pieces of gear? This was a random drop from a mob. Or do I have to apply more sigils? The gloves have a major sigil of lyssa applied, so do I need to tack on more? Again, sorry if this is a dumb question. I’m new to GW, so I’m a bit confused over how certain things work.

Put more of that same type of rune on your gear.

The item has a major rune on it, to get the later bonuses you have to equip other armor with the same rune on them. The 2nd rune gives the 2nd bonus, 3rd rune gives 3rd bonus and so on.

Cool, thanks. Now, can I make this sigil as an artificer or buy it from a vendor? If it drops randomly, I’m sure I can find it at the trading post if that is the case.

Several crafting professions can make runes/sigils; others can be salvaged off gear in the world or drop in jumping puzzle/dungeon chests. No straight up vendor for them, though.