You target one Enterprise with this ritual, the owner of which must be present for the entire performance of the ritual.
This ritual can only target a Mine.
While under the effects of this ritual a Lightstone Mine produces Ironmarks instead of Silvermarks, Adamant instead of Mithryl, and Tenebrite instead of Luminium.
While under the effects of this ritual a Darkstone Mine produces Silvermarks instead of Ironmarks, Mithryl instead of Adamant, and Luminium instead of Tenebrite.
The target also produces +1 Trading Mark of the new type, in addition to its normal production.
The effects of this ritual last until the end of the next Round of Downtime or another Enterprise Sorcery is placed on the target (whichever comes first).