This pair of fel stargates works with party members. The first portal (purple) sits where you are standing, and the other end (green) is directed to anywhere with a small target circle. Demonic Gateway has both a minimum range of 20 yards and a maximum range of 70 yards.
Once you've selected a spot to spawn the portal, the finishing cast animation looks like Glyph of Shadow Bolt plus Glyph of Verdant Spheres. Around each portal in its respective green or purple color will be up to five fiery orbs. These represent the number of charges the Gateway currently has, and it recharges one every 15 seconds that it's not being used, starting at zero charges on the summon.
To travel, simply walk through the opening and fly to the other side in a fel green or purple ball.
It's open warfare between Alliance and Horde in Mists of Pandaria, World of Warcraft's next expansion. Jump into five new levels with new talents and class mechanics, try the new monk class, and create a pandaren character to ally with either Horde or Alliance. Look for expansion basics in our Mists FAQ, or dig into our spring press event coverage for more details!