Lets keep it all very Simple and Clean.
RD/KP11-JP042 クウェルティ・キーブレード QWERTY Keyblade
Equip Spell Card
[REQUIREMENT] You can equip this to 1 face-up Dragon monster you control.
[EFFECT] The equipped monster gains 200 ATK x [The number of face-up Spell Cards you control]. If the equipped monster is a DARK monster, its attacks pierce.