Kelventari is an herb - an emerald green berry found typically in forests (when growing wild). It is prepared to be applied as a paste. The primary use of kelventari is the creation of the splendid aura: the kelventari waxing. This serves as a defence against certain forms of attack, such as having poisons spat at you, and provides you with a corona to light your way through darkened surroundings.
Syntax: WAX and WANE
After you have applied the prepared kelventari herb (via the APPLY KELVENTARI command) you will be able to call upon the bright and splendid kelventari aura at will. To bring forth the aura apply the berry, type WAX and it will appear shortly afterwards. To remove the aura again, type WANE and you will return to your normal, unlight-ed state.
The splendid kelventari aura is not foolproof and as with most defences in Avalon can be overcome by certain attacks, the most common of which is its susceptibility to the dust of the erasmus poison. This erasmus dust is able to instantly disperse the kelventari aura, depriving you of any defensive benefits.