Rosemary Materials

Snow Spider's Web
DifficultyChance
Basic 0.2923%
Intermediate 0.3875%
Advanced 0.7662%
Hard 0.7662%

Ice Fabric - Snow Troll *
DifficultyChance
Basic 0%
Intermediate 1.5873%
Advanced 3.0303%
Hard 3.0303%

Ice Fabric - Giant Snow Troll *
DifficultyChance
Basic 3.9215%
Intermediate 6.6666%
Advanced 8.3333%
Hard 8.3333%

Ice Fabric - Grim Reaper
DifficultyChance
Basic 3.9215%
Intermediate 3.0303%
Advanced 3.9215%
Hard 5.5555%

* Snow trolls in the villager defense mission have various forms with various different drop tables and I'm not digging through those, so these are the normal kind you'd find in the non-defense and non-generation missions.