I feel like this is an underrated card. I don't know if it's due to the confusion of the ruling, or because it's not used a lot, but I've had more than a few duels where people honestly don't understand that it protects monsters for the whole turn, and will still try to attack me multiple times after I have used it. This card is a hidden gem in my Right Back at You deck.
It's definitely confusion over the ruling. You look at the card and think, ok they don't take damage that's fine. I can still kill their monsters. Then you think to yourself, OK no way I missed something with a continuous effect that protects monsters, maybe it's a once per turn thing. Then you go read the ruling page and realize that Konami is lazy about errata.
Why defense draw still destroyed monster while this card doesn't?
A quote stolen from Frapplejacks on Reddit. "Duel Links uses the most updated TCG printing for the effect, yet uses OCG rulings. This is why we have some dumb shit like Hollowed Life Barrier having battle protection despite it not being listed anywhere on the card, or having archaic wording of effects like Dark Elf. Darkness approaches got an erratum released online, but has yet to have a printing
This card is bugged. Monsters should still be destroyed after you activate this card.
This card should be SR or UR. Even the cost is just discarding 1 card is too good. In Addition, your monsters cannot be destroyed by battle in the turn you activate this card. Although, There is no description about "monsters" in the text
hallowed life barrier is a cheap Impenetrable Attack with a cost of a discard yet does both effects of impenetrable attack so i prefer it, cloning is a drop reward for kaiba i believe so i won't go for it with a ticket
this really should not prevent the destruction of monsters. nowhere on the text is that said or implied
Why? It works as intended. It didn't speficy what needs to be attacked (so it can be a monster or direct). It protects monsters because they can't be killed by 0 dmg (for example, you attacked with some high beater, they activate this, any dmg you would do with that monster is 0), it's normal ruling at work here.