Buildings:
1) Independendent Command Center, automaticaly produces 1a and 1b;
2) Xel'Naga Altar of War, automaticaly produces 2a, 2b, and 2c;
3) Independent Starport, hiring 3a and 3b;
All these XN buildings produces units automaticaly, when player has enough psi and resources. He cant control this process for a while;
4) Protoss pylon - used by both protoss and Xel'Naga;
5) Phase Turret - same as Photon Cannon, but much stronger, It is only Xel'Naga building, that must be placed near pylon;
6) Protoss Assimilator - protoss building used by 4th race.
Units:
1a) Mining drone - 50 ore; worker, almost same as probe;
1b) Xel'Naga Bioweapon - 75 ore (autohiring when 250+ ore); Every time it kills any enemy unit It spawns a copy of itself. Strong against terran infantry, and most zerg units. Weak against terran vehicles and protoss units;
2a) Venom Tank - 400 ore heavy tank with medium range, cant attack air units;
2b) Xel'Naga Survivor - 200 ore and gas; Copy of Infested Samir Duran, with protoss shields, spellcaster;
2c) Hybrid Psionic - 225 gas; Generates psi-storm for free, strong against any amount of units, weak against lurkers and zealots, cant hurt buildings;
3a) Xel'Naga Duelist - 350 ore and 200 gas; Very weak air unit, detector, with huge weapon's range; It has 108 shields, and 12 hit points; but when shield has gone and battale seem like over - it actualy only begins! Strong against most air units, weak against protoss aircrafts, valkires;
3b) Independance Cauldron - 75 ore and 300 gas; Transport, has air attack, spellcaster;