Yes, it destroys your opponents monsters if they get cocky with their summoning and choose to attack, but it does not deal any damage when triggered
The deck is full of extenders and amazing boss monsters, and some of them still see play in other decks to this day
The effect itself is strong enough, but there are level 8 rivals with no other restrictions, such as Scarlight and , high-performance attackers who don't choose opponents (and can move from EX on its own like Stada), and removal other than destruction is possible
If the cardpool is shifted to Pre-Shock Master, it would allow for more counterplays to the Ultimate Offering combo
Then the card shuffles itself back into the Extra Deck with is technically a -1 since you have one less card on the board
You're a skilled duelist, built for battle, designed for destruction