All in all, since there was such confusion, and I am partly to blame (http://forum.heroesworld.ru/showpost...9&postcount=63), let me clarify:
1) Jay R is immune to blocking, meaning his damage cannot be blocked. When attempting to block his damage, the block is not recorded in the game log.
2) Demi initially has damage, so blocking her damage is not recorded.
3) Mana block is not recorded.
Except the ones we've made