Just had a Young Wyvern play Wild Spark targeting my dwarf. The dwarf was standing next to a square affected by Wall Of Stone (see screenshot below). AFAICT, the Wall Of Stone square should count as "blocking terrain," and thus the Wild Spark damage should be reduced by 5. However, in my game the Wild Spark did the full 8 damage.
(Edit: fail) Actual answer: Wall Of Stone has problems interacting with cards that care about blocking terrain. (e.g., Cautious Sneak)
Actually, I wonder if anyone has checked whether Large Weapon and Anvil Strike also suffer from this problem. (I didn't see any other cards that care about "Blocking Terrain" listed in the wiki.
