Mirror Force Dragon 

The least bad powerhouse anime monster in the set.  Mirror Force is a playable card.  2800 ATK is nice, and destroying all of the opponent's cards as a reaction is fun too.  Too bad the other trap card fusions for Critias aren't that good.  But I'm tempted to bring a fun Mirror Force themed deck to locals though.

2.25/5

"Come come now Kaiba, we can't keep the Great Leviathan waiting."--Dartz

Mirror Force Dragon, I assume is better than it's anime counterpart.  I feel if it had the latter effect it has now, Maja Curse wouldn't have destroyed it, but the Trap could be a higher chain speed...too much nostalgic thinking I suppose.  Light, Dragon, 2800 attack, fused with Criteas and Mirror Force...plus the benefit of destroying ALL cards your opponent controls (also couldn't do that on the anime) when targeted for attack or by an opponent's card effect.  Oh, and that extends to any Monster you control, not just Mirror Force Dragon.  This is one of, if not the best card, to come from these collections thus far.  The effect doesn't take place note during the Damage Step, but that's not a huge deal.  Note too, you have to be targeted, so there are ways around this card, but it's still pretty good.
 
Rating:  4/5
Art:  5/5

Mirror Force Dragon is another one of the fusion monsters involving the Legendary Knight spell cards that is worth playing. Most players play Mirror Force and with it at 3, there's ample opportunity for the Fang of Critias to be effective. Solid ATK with Type and Attribute support behind it, Mirror Force Dragon ups the destruction ability of Mirror Force to cover the whole board of your opponent, that alone makes this card a desirable one to play. Not only that, it includes a monster of yours being targeted by a card effect, not just as an attack target. Not being required to have the card on the field is good, but if you could remove it from the graveyard in addition it would make this card easier to play. 
 
The whole “Legendary Knights” build is a fun build. If someone could make it competitive and consistent it would be a serious accomplishment. If you build the deck, this card has to be in the Extra Deck.
 
Advanced-3/5
Art-4/5
 
Until Next Time
KingofLullaby

Mirror Force Dragon is a great monster by design. It has great stats of Lvl 8 Light Dragon Fusion Effect 2800 Atk and 1200 Def. It also has a great effect and an easy way to summon. The Fang of Critias lets you send Mirror Force to the grave from your hand or field to Special Summon this monster from the extra deck. Then, whenever a monster is targeted by your opponent's anything, destroy all of their cards on the field. One sided field clearers are frequently banned (RIP Harpie's Feather Duster). But this card does that plus Raigeki for free. I know there are a lot of cards that don't target that would essentially render this card useless, Torrential Tribute comes to mind. Regardless, I want to see this card versus a plethora of judges' nightmares. For example,
 
versus Fiendish Chain or Effect Veiler
versus Solemn Warning (the monster targeted not the spell?)
versus Archfiend Black Skull Dragon's attack
versus Ritual Trishula (because Synchro Trishula doesn't target, right?)
 
Those are probably easy answers, but I would try it anyway. It's better than Mirror Force. Running Mirror Force and some of the other Critias traps is not a problem in most decks. 
 
I believe this monster is perfect with Fusion Conscription. If Mirror Force is considered a Fusion Material, Fusion Conscription would let you bring Mirror Force to your hand from the Deck or Graveyard. If I'm wrong, then so be it. That doesn't affect the score here.
 
Score: 4/5 I have many good questions about this card. 
Art: 4/5 I don't see a lot of Mirror Force, but I don't care. 

Remember when I said that Timaeus the Knight of Destiny was an exclusive card for Legendary Dragon/Knight decks? Ah, it was as though that were yesterday....

Now meet a Legendary Dragon card that's actually versatile: Mirror Force Dragon!

To summon this guy, you need “The Fang of Critias” and “Mirror Force,” but those are the only requirements you need. After that, say hello to a 2800-ATK powerhouse that makes all of your opponent's cards go BOOM!!! I love cards like this, I truly do. (Leviadragon's may bae.)
The only drawback is that your opponent must try to destroy one of your monsters, either by battle or by card effect, in order for the “Boom” to go off. Also, you can't set off the “Boom” during the Damage step, so cards like Mirror Force or Magic Cylinder could still be played against you. It's not a perfect card, but man does it come close!
I highly recommend this card for anyone willing to give the Legendary Dragons/Knights a chance. You should at least side-deck this and Critias just in case.

Final Score: 5/5 (Legendary decks), 3/5 for Side deck plus Critias