B10LK0
2015-09-10T21:32:59Z
Hi all, i report a bug. When i have a monster that can't be targeted for an attack and it's the only one on the field the opponents monsters can attack me directly. For example Legendary Fisherman when i've umi on the field can't be targeted for an attack, but if it's the only on the field the enemy can attack me directly anyway. I hope you will fix it in the next patch. Thanks All.
Steeldarkeagel
2015-09-10T21:35:21Z
While "Umi" is on the field, this card is unaffected by Spell effects and cannot be targeted for attacks, but does not prevent your opponent from attacking you directly.
http://yugioh.wikia.com/.../The_Legendary_Fisherman 
MVPIII
2015-09-10T22:52:04Z
I can understand the confusion, legendary fisherman can stand to be worded differently. Replace the comma with a period and then add, as a new sentence "If this face-up card is the only monster you control, your opponent can attack you(r life points) directly". It's an old and until recently, obscure card, however people will be using it more and more for legendary fishmerman III so I imagine it will get an erratum in the future.
B10LK0
2015-09-12T00:02:06Z
Thanks for the answers. I wasn't aware of the change of the text, now it's clear. [:thumbu:]