The oracle uses a modified star relic model, due to the art team's fondness for the cut unit. The oracle originally had a gold and blue color scheme, but switched to a Dark Templar color scheme when the tempest's color was changed from Nerazim-oriented color to gold, and the development team felt that one of the two new flying units should use the silver and green coloring.
The oracle's stasis ward ability could once be cast manually. However, the developers noticed players stacking the ability several times, and then manually detonating them over time to indefinitely leave units in stasis. The manual cast was removed, as Legacy of the Void is meant to grant constant combat.
The ability has an energy cost of 50 and a range of 7. It is channeled against an enemy structure. Until canceled, it deals 3 damage and gives the player 3 minerals per second but does not subtract minerals from the enemy player.
The oracle once possessed a Phase Shield, an area-of-effect defensive ability. The ability lasts 5 seconds. It removed and rendered units immune to these effects: Fungal Growth, Corruption, Contaminate, Graviton Beam, Concussive Shells, Abduct, Revelation, Vortex, and 250mm Strike Cannons. It removed the anti-cloaking effect of EMP but not the damage dealt. It would prevent a unit from being affected by Neural Parasite but would not remove the effect. This ability was removed during development.
Encases minerals in an area of effect in a shell, making them unharvestable. The shell has 130 HP and can be destroyed on each mineral field. The player whose workers cannot harvest receive a warning. Static defenses will automatically attack the shells.