Currently, Myth attacks are adding an additional 25 damage when targeting the Life Fairy while Death attacks are not adding their usual +25 damage against the Life Fairy form. So basically, the Life Fairy form, although it is Life, is being treated as a Death in regard to incoming attack boosts.
Re: Beastmoon Hunt - Life Fairy Incoming Damage Boost
I don’t know if this is intended, but I leveled up the new life fairy to level 3 but the sidedeck didn’t increase. It stayed the same as level 1 with only 2 cards max.