Immunity: Physical makes sense.
Statue Form grants Immunity: Physical, perhaps on a Gargoyle that doesn't have statue form. It could have immunities/resistances or rock eater. I think some getting Rock Defiance would be good for a lot of runes.
lol @poinl I think FS needs a rune similar to Terraformer. Instead of terraform: lava it would be water. Some type of water elemental.
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