Ovartka is the placement of displacementary defences around the person.
It is considered a high level Edeva skill.
First developed by the Ori after the split from the altera, Stevenson believes that he should not have been able to produce such an effect this early in his development, but as pointed out by the last remaining ascended Ori, turned Rivera, the Universe does not conform to preset ideals and as such will further develop when stressed.
The growth of Ovartka skills is seen as the first stage of the rise of the Juntar, a person capable of reaching across the dimensional divide into Alfheym and killing ascended beings.
It is involved with the release of Bio-plasma and as such is seen as dangerous by the ascended and the Originals and the person producing such Bio-energy is to be destroyed.