Triggered by Monster Summon:
* Torrential Tribute: This card is similar to Mirror Force but destroys all monsters your opponent controls, instead of just those attacking. It's a powerful option, especially if your opponent has multiple monsters.
* Dimensional Fissure: This card is similar to Mirror Force but prevents your opponent from Special Summoning monsters, giving you a powerful defensive advantage.
* Karma Cut: This card is similar to Mirror Force but destroys all monsters your opponent controls when they attack with a monster that is a different attribute than your opponent's previous attack.
* Compulsory Evacuation Device: This card destroys all monsters on the field if your opponent controls more than 5 monsters.
Triggered by Attack Declaration:
* Blast with Chain: This card destroys the attacking monster and inflicts 500 damage to your opponent. It is a bit less powerful than Mirror Force, but still a good option.
* Divine Wrath: This card destroys the attacking monster and inflicts 1000 damage to your opponent. It is a powerful option but it is a trap card and has a higher cost.
Other Options:
* Solemn Judgment: This card can negate the activation of a Spell/Trap card and destroy it. It's not specifically about destroying monsters, but can be very powerful in the right situation.
* Solemn Strike: This card can negate the activation of a monster effect and destroy it. It's not specifically about destroying monsters, but can be very powerful in the right situation.
* Call of the Haunted: This card can bring back a monster your opponent controls as a monster on your field. This can be a good way to get rid of a powerful monster and use it to your advantage.
Important Note: The price of cards can vary based on the set, rarity, and market demand. While some cards on this list may be cheaper than Mirror Force, they may still be costly depending on their rarity.
It's always a good idea to check online retailers and card marketplaces to get the most current pricing information.