Just a small advice here:
Don't mess with magician onto copyrights... they got weird psychic powers!!!
Seriously, if you want to sell an effect, you must be able to call it "your". To call an effect "your", it has to be something never seen before (from a totally new effect to a tottaly new way to achieve an effect).
Other question here, is there some kind of data base to check out every single effect produced to make sure there's not duplication of copyrights? That must be a huuuuge job to keep it up-to-date!
Anyway, cheers! (Starting to pick up a bit of the british expressions

!)
For the language thingy, it's still illegal even if you translate. For this, you must ask Sankey's (good luck!) permission do to so
Maybe you could consider other ways of making money outta magic... check out for restaurants live performance in the streets (need a legal form for this one (Help! I lost the word!)...