Sneak peak of "Rival" set!- need to know if they're any good!

[Command Knight]

Pictures from Photobucket.com.

You can only activate this card when a monster you control is destroyed by Battle and sent to the Graveyard. Special Summon the destroyed monster on your side of the field. As long as that monster and the monster that destroyed the other by Battle Remain on the field, neither monster can be desroyed by Battle except with each other. When both of the monsters are destroyed, destroy this card.

[Blitzkrieg98]

Interesting... A "Rival" Set. It would actually come across as a good concept. I know this is probably a start, but more cards should probably be made to skyrocket the set.

 

Now, to the rating:

 

Effects: 8.5 (The effects look close to balanced. With "Mito's" effect, you should probably be a little more clear. Would it be the Levels of the monsters that the opponent controls altogether or would it be for the cards that overwhelm the field?)

---Grammar: 8.5 (The grammar on "Mito's" card looks close to the old style grammar. However, "Stars" should be "Levels" and "Battle" on "Eternal Rivalry" shouldn't be capitalized. "Remain" should be uncapitalized and "monster that destroyed the other" should be "monster that destroyed it". Spaces do need to be put on "Mito's" effect. Names of certain cards usually have hyphens, not commas.) (Note: Exception would be the Trap Card "Begone, Knave!")

Appearance: 8.75 (Hah! Street Fighter FTW! C'mon, Ken, not even Evil Ryu can take you down! ...Ahem. But to be serious, "Mito's" type should be different, as a completely human-looking Fiend-Type can be misleading. Look at the "Dark World" archetype, those things are damn fiendish.)

Playability: 9.5 (The cards aren't outstandingly anime overpowered so I can understand that they needed little to no card limitation. Good work.)

 

Overall: 9.0/10 "Excellent" (This looks like a welcoming start to a good expansion. "Mito" may need a little more work, but overall, you are introducing a nice concept. I look forward to your work.