You're getting into a very cramped space. You're competing with the game maker who has a card search, card vendors have search, some better than others, and then there are the other outlets which provide card search.
Right now, your search is extremely limited and the results are underwhelming.
The UI needs a lot of work. It looks like the site fails to load with the search at the top and a banner under it. There's nothing on the default page. Secondly, aside from the domain, there's no Magic the gathering symbols or graphics.
Your search results need card images, and it needs information which makes me need to use your database. Why shouldn't I go to Gatherer.wizards.com or MagicCards.info?