The Great Lore Master

As log as The Great Lore Master is on the battlefield, you may play with your hand open.
As long as your opponent is able to see your
hand, you have no maximum and size.
Whenever you cast a spell, you may draw cards
equal to it`s converted mana cost.
Whenever a spel you control is countered, your opponent discard cards equal to it`s converted
mana cost.