Each time you use a planar power, it will drain 1-3 of those charges, but until you do that they persist (even after dying or logging out). You gain one charge back for each rift you seal. If you've been closing rifts but not using any powers, you've just been running around with all 3 charges unused for a while.
The blue stones you see in settlements and quest hubs are the wardstones I mentioned. Planar creatures or the godless Defiant (if you are on a PvP server, wardstones are attackable by enemy players, not just NPCs!) will try to attack them, and if they are destroyed the NPCs in the area (vendors, quest giverts, etc) despawn for a while.
If you are into world PvP this is a good way to stir up trouble, especially if you know which enemy hubs make particularly good targets thanks to the quests they offer. I play on a PvE server just to not have to deal with the hassle.
The blue stones you see in settlements and quest hubs are the wardstones I mentioned. Planar creatures or the godless Defiant (if you are on a PvP server, wardstones are attackable by enemy players, not just NPCs!) will try to attack them, and if they are destroyed the NPCs in the area (vendors, quest giverts, etc) despawn for a while.
If you are into world PvP this is a good way to stir up trouble, especially if you know which enemy hubs make particularly good targets thanks to the quests they offer. I play on a PvE server just to not have to deal with the hassle.