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[exokmz1000]

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[Flash Flyer - Sakura]

I'm guessing this is supposed to be implicit support for those Charmers you posted earlier; this will help you get them quicker, but that's really about it. I'd advise changing the name though, since this is more general Spellcaster stuff and less on what actual Dark Magicians need (to be fair, only common card they can grab off this is just Magician's Rod and that's kinda meh). 
 
A word about the hybrid PSCT / numbering, you only use the numbers to denote effects that can be negated. Anything before the numbers cannot be negated (hard OPT clauses are not effects). I use this style too, just so you know. 
 
Here's a fix. 
 
You can only activate 1 "Dark Magician Spellcaster" per turn. (1) Add 1 Spellcaster-Type with 1500 DEF monster your Deck to your hand.

[exokmz1000]

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