I'm confused. It says in the descriptions clearly that they can't be affected by monster effects but any time I try to battle them they stay alive. It says nothing about "can't be destroyed by battle" so...the 🔥?
My guess would be that in Japan it's worded similarly to Waboku. (Remember the old SDY Waboku wording that says it prevents Battle Damage to monsters?) Either way, it's how the card works in Japan that matters in Duel Links. (Fusion Tag's another card that works differently between the TCG/OCG for example.)