[quote=@Xeiyenreisha]
Name: Chrysantheum, The Spell Breaker Dragon
Level/rank: LV 7
Attribute: Light
Monster Type(s): Dragon/Fusion/Effect
Effect: Eclipse Wyvern + Mirage Dragon 
This card cannot be Special Summoned except by Fusion Summon using the listed fusion material monsters. When a Spell Card would be activated while this card is face up on the field, reduce this card's ATK by 500 then negate the activation of that Spell Card and destroy it. This includes face-up Spell Cards as well. During your End Phase, discard one Spell Card from your hand to restore this card's ATK to normal.
ATK/DEF 2600/2000
[/quote]

Nitpick but you can't negate the activation of a face-up Spell Card since the activation is playing the card. You can negate the effect of it, however. Also minor, but that last bit is worded very awkwardly. I'd say 'restore this card's ATK to it's original ATK' or something to that effect.

EDIT: Ammokkx putting the ninja characters to shame by being an actual ninja.