Suggested change to Blood of the Fallen
It seems like the consensus among experienced players is that the Blood of the Fallen favor item is almost always the best one to take. 800hp right out of the box does seem like a pretty big advantage. Its significant even in the late game. In the early game, it almost seems nonsensical not to take it at least if you think your opponent is going to take it. That characteristic puts the item in danger of being OP.
I would suggest that instead of a straight 800hp bonus, it be changed to a bonus per level. +40hp per level, for example, would make it add up to 800hp at level 20, but wouldn't make it overpowering in the early game.
-Kris