Book of Eibon - Attach to a character. Attached character's controller cannot have more than 5 cards in his hand. If that player has more than 5 cards in hand, that player must choose and discard cards from his hand until 5 cards remain.
I played this on my opponent's character when he had 6 cards in hand. He had to discard down to 5. That's simple enough. The question is what happens during his draw phase? We came up with these options:
a) He cannot draw as that'd violate the card limit.
b) He draws 2 cards, has a hand size of 7, discards down to 5.
c) He draws 1 card, discards down to 5. Draws the second card, discards down to 5.
We chose option 'c' as it seemed to follow all the rules, but we're curious if there are alternate opinions.