That's why i'm looking for some good Wizards? I'm thinking of making the deck blue black with perhaps a splash of another colour.

Some suggestions:
Voidmage Prodigy
Meloku
Patron Wizard
Dark Confidant
Snapcast Mage
Sylvan Safekeeper
Yixlid Jailor
...

4 Bob
4 Sprite
2 Flashback Mage
2 Vendillion Clique
2 Sower of Temptation

4 Stoneforge Mystic

4 Brainstorm
4 FOW
4 Mental Misstep
4 STP
1 Batterskull
1-2 your equipment of choice (Sword of

24 lands
5-6 Duals
6-7 Fetchlands
2-4 Riptide Labotory
4 Mutavault
2-4 basics

Most wizards (good ones) will likely dip into another tribe as well, so don't overlook those interactions. Riptide Laboratory is also probably a must in the deck.

I think the main thing that will keep it from working competitively is the lack of a good lord. I don't think Merfolk would be nearly as powerful if it didn't have so many good lords to help boost the power of its creatures, grant them evasion, or to lock down threats. Patron Wizard is cool, but it doesn't push through the damage a fish deck needs to do.

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