Guild Wars 2

https://www.reddit.com/r/Guildwars2/comments/6u622i/patch_notes_16_august_2017/dlq7r9l/

if you have the signet trait, put a signet in the right-most utility slot (9). Then move it to the middle slot (8). It gains a stack of the buff if you do this. Then move it to the left-most slot (7), it gains another stack for a total of 3 stacks. You can do this with another signet and put it in the middle slot to get 2 stacks. Tons of free power or condition damage.
It might not show up in your buff bar, but look at your hero pannel stats

Hopefully they fix all bugs. The Sword of Justice is still bugged :/

Its more broken when you use signet of judgment, basically a free 69% damage reduction