Sky Mistress, Mystery Lights [Codex Single]

[.codex]

My first time ever using Zextra's template, I think it looks pretty good.

[spoiler=Totaly not a Black Rose ripoff...]
1 Tuner + 1 or more non-Tuner monsters
When this card is Synchro Summoned: You can destroy all other monsters on the field; this card gains 300 ATK and DEF for each of those monsters, but you cannot Special Summon other monsters for the rest of the turn. This card attacks: Change it to Defense Position at the end of the Damage Step.
[/spoiler]

[Sleepy]

1 Tuner + 1 or more non-Tuner monsters
When this card is Synchro Summoned: You can destroy all other monsters on the field;

As in, the condition is being Synchro Summoned, and the cost is destroying all other monsters on the field? That can't be right. Don't put a semi-colon after it, that is the signal that the actual effect is about to start there.

 

this card gains 300 ATK and DEF for each of those monsters, but you cannot Special Summon other monsters for the rest of the turn.

This sounds alright. It'll probably stay at Blackrose's level on a regular basis.

 

During each of your End Phases, if you used this effect: Take 1000 damage to your Life Points. If this card attacks: Change it to Defense Position during the end of the Damage Step.

"to your Life Points" is not necessary when you already stated it's damage you are taking. As for the "during the end of the Damage Step" part, I thought of "Destiny HERO Dasher" and "Goblin Attack Force" and just now I discovered they change until the end of Battle Phase. Still, for effect that activate right after that battle is over, what is usually uses is "after Damage Calculation".

 

 

 

The card overall is alright. I'm of the opinion that you don't really need all 3 drawbacks (Special Summon seal, burn, and switch to Defense). 

The first one is good, the second random, and the third, well... I don't particularly care for that one.

All in all, is a sort of alternative to Black Rose. 

 

Though, I gotta give you kudos for making her be stoppable by both "The Turtle Once Called God" and "The Turtle that Someday will be Called God"...... I just had to say it.

[.codex]

The card overall is alright. I'm of the opinion that you don't really need all 3 drawbacks (Special Summon seal, burn, and switch to Defense). 
The first one is good, the second random, and the third, well... I don't particularly care for that one.
All in all, is a sort of alternative to Black Rose. 
 
Though, I gotta give you kudos for making her be stoppable by both "The Turtle Once Called God" and "The Turtle that Someday will be Called God"...... I just had to say it.

I got no idea what you're talking about. The cost is to destroy, the effect is the ATK/DEF gain, it's written like I wanted it to be written. I see that you don't write "to your Life Points" anymore. As for the "after damage calculation" (which is btw no capitalized), no that's wrong, that would be the step where effects activate, which is not my intention. I did however write it wrong, it should be "at the end of the Damage Step". Other than that, thanks for the constructive review, and you get a like because of it.

[Sleepy]

I got no idea what you're talking about. The cost is to destroy, the effect is the ATK/DEF gain, it's written like I wanted it to be written. I see that you don't write "to your Life Points" anymore. As for the "after damage calculation" (which is btw no capitalized), no that's wrong, that would be the step where effects activate, which is not my intention. I did however write it wrong, it should be "at the end of the Damage Step". Other than that, thanks for the constructive review, and you get a like because of it.

2 things to note.

First. Yeah, just checked what I was using in my head as base and you are right:

 

Second.

Wait! You actually intended THAT to be a cost? o.O"

It's not a good thing if your opponent cannot stop it, IMO.

[.codex]

I see what you mean. I will make it an "and if you do" instead so your opponent isnt screwed