| Term | Definition |
|---|---|
| Off System War | War that does not use any in game system war style, and is a free for all with no rules or regulations during battling. |
| Oracle | The Oracle offers in app purchases, and abilities that can be bought with Nobility and Health Crystals. |
| Osmon Rai | Tier 5 set of lands after Abyss lands criteria has been reached after opening 15 Abyss lands. |
| OSW | Acronym for "Off System War". |
