Swarming merfolks control

Hello everyone

I'm a still new to this great card game which is called magic. One thing I absolutly love doing is building my decks, so here I will give it a try.

As I see it, the point of this deck is to:

Be cheap to buy
Have control
Control many little creatures

In THEORY, a game would go like that:

-Play cheap merfolks
-Cancel with cheap spells/effects
-Get a lullmage out with 7 merfolks as soon as possible
-Can then start worrying about putting alot of creatures

I have no idea if that concept will work nor what it will look like

I will explain why I am putting every single card here:

Merfolk Sovereign: This card give's a nice and simple +1/+1 to every merfolk I have and can makes something unblockable may it be a 11/11 wake thrasher or a simple scroll thief to draw. I am aware that there is Lord of atlantis but I find this card to be a bit old and probably expensive. Obviously 4 because the effects stacks

Merfolk Spy: This is a simple 1/1 for 1 mana. The island walk synergizes well with Spreading Sea (obviously) and the ability it has can help tons when playing that many cancels. 3 because it's cheap and gets +1/+1 with Merfolk Sovereign but I needed a spot for rite of replication

Wake Thrasher: I find this card to be really, really strong. It's the only "expensive" card in this deck. Coupled with the Merfolk Sovereign, you can easily attack in the double digit with an unblockable creature. I am still unsure as if to put 3 or 4.

Cursecatcher: A nice 1/1 for 1 mana. Helps tons taking care of early sorcery/instants without needing to keep your mana. 4 to make sure you can have at least one in the two first turns

Lullmage Mentor: A card I like a lot. 7 Merfolks is easily obtainable ESPECIALLY if you use cancels and can get up some tokens. 4 because I think that it's a really strong card

Silvergill adept: The additional cost is a joke to pay since you have so many merfolks. This is somewhat like a wall of omens that can attack with a bit worst stats. And I love wall of omens. And it's a merfolk too. 3 Because we already have many draw cards but it's a creature too

Leyline of Anticipation: Now, if I read that right, this is great... IF you start with it. Playing my merfolks instantly mean I can get rid of the mana problem and actually play them at the end of my opponent's turn to see if he did cast something or not. 2 because I am unsure as if it is wise to keep them or not

Spreading Sea: I didn't originally want to put those here but a friend convinced me, I think it gives somewhat decent "mana" control and can help some of my merfolks to get through. The draw effect is nice too. 3 because I find it nice but I don't want it to in my hand all the time

Mana leak: Absolutly rapes anyone casting something early for a somewhat cheap cost. Helps me get the advantage early on. 4 because it's that awesome

Unsummon: Assuming I can't counter a creature this is my only way to make it bounce back. 4 because I think it's required

Merrow Commerce: Albeit lackign synergy with the wake thrasher, it does let me attack AND have enough merfolk to counte a spell with the lullmage. Only 2

Cancel: Required if I do mess up something or have a pretty bad hand and my opponent could get something big out. 2 Because I'm missing space

Rite of replication: There incase I'm out of ideas. The kicker can be absolutly goofy with lullmage. 2 Because I'm missing space (Again)

Now, I need help with a couple of things:

-I need to know if I have a sufficient number of cancels
-What do you think of this deck? Good or not?

Please share me ALL your sugestions and oppinions.

• Tribal