Magic rat deck improvements?

Well your first move it to remove 8 of the relentless rats. Reason being you can only have 4 copies of a single card in a desk to make it legal. And if you are going to play in tournaments you are going to need to get rid of the dark rituals. I believe they are restricted in type 1 and banned everywhere else. You could also look towards a diabolic tutor or two so you can find the coat of arms when you need it.