Duel Tower (Quarter Century Secret Rare)

At the start of the Battle Phase: Activate this effect; each player can reveal 1 monster from their Deck, except a monster with ? ATK, and if they do, banish those monsters face-down. The player that revealed the monster with highest ATK can Special Summon 1 monster from their hand, and if they do, it can attack directly. Once per turn, during the End Phase: You can activate this effect; if this card is still on the field during the End Phase of your next turn, destroy all cards on the field.