All testing and calculations are made with included Swallow and Tawny Owl. Maribor Forest allows 3rd cast much quicker then without it but potions are also rebalanced and some of them seriously weakend. Weakened potions and oils doesn't mean they are useless. In fact, you can't survive without proper potion and oil, fe. all spectre type enemies are almost untouchable without oil against spectres. Black blood as always will be one way do deal with hungry monsters but this time it will be last resort. You don't want to be bitten, it might end with death of both carrion eaters and Geralt.Fear immunity is popular among monster type enemies in FCR.