The possibilities are endless with this card because if an opponent's monster with an appropriate Level is cloned, either a Synchro Summon (if the right Tuner monster is under your control) or a Ritual Summon can be performed.
This card can be effective against "Monarch" monsters, disregarding "Mega Monarch" monsters.
Use this in a Side Deck against Skill Drain Decks. It will allow yourself to gain powerful monsters without the drawbacks.
Combo with cards that banish monsters/cards when they are destroyed, or cards that return destroyed cards to the hand or Deck (instead of being sent to the Graveyard), so that the "Clone Token" will survive.
Activating this while "The Seal of Orichalcos" is on your field will ensure that your Token is stronger than their monster.