This is the first deck I've ever posted here, so it probably isn't very good. Please don't insult, I know it probably needs fixing, so if you think of something that should change, post it.

Water Deck-
-Monsters-
Abyss Soldier X2
Penguin Soldier X2
Amphibious Bugroth MK-3
Mermaid Knight
Levia Dragon - Daedalus
Mobius The Frost Monarch X2
The Legendary Fisherman X1
Gagagigo X2
Hydrogeddon X3
Mother Grizzly X3
Nightmare Penguin X1
19

-Spells-
A Legendary Ocean X3
Umirika X1
Salvage X2
Book of Moon
Mystical Space Typhoon
Emergency Provisions
Snatch Steal
Premature Burial
Nobleman of Crossout
Terraforming
Swords of Revealing Light
Heavy storm
Big Wave, Small Wave
16

-Traps-
Call of the Haunted
Dust Tornado
Tornado Wall
Sakuretsu Armor X2
5

Dude first off Big Wave, Small Wave is a magic card. Second why are u running all of these no needed cards??

I'm a water deck nerd.
First of all I absolutely hate you because I can't find an abyss soldier anywhere.
Second off not a bad start.
I like yout monster choice cept for a few cards but i'll get to that later.
I'm pretty sure your deck is advanced format and if it isn't ignore this
but change of heart, tribe infecting virus, and pot of greed are banned
So they got to go
big wave small wave is a magic card so edit that into your post.
there are some really questionable card choices in there.
Most water decks would not run deepsea warrior at all
or 1 mother grizzly. Because the grizzlies can be used to seach out eachother and be a wall of defense for up to four attacks. So if you run grizzlies run 3.

Now there is one problem here.
I can't really give anymore advice on your deck.
that's because i don't wanna completely change your deck.

Please tell me what your going for.
How do you want to win your games?
Do you want to keep answering whatever your opponent does and win out or
swarm them and kill them in one fell swoop.
do you want your deck to revolve around one main card like a
levia dragon daedulus deck.
or a deck all about big wave small wave.
or a deck all abotu bouncing cards to your opponents hand
Or something more original like an aqua spirit fenrir return water hybrid.

If you could tell me what your going for with this deck I will post again and help you further.

be specific.
Also.
Hooray someone else who runs water

A few words from a water veteran.
First of all ditch the Deepsea Warrior. Try another Mobius (need one or two pm me I'll be happy to help you out.). Anyway getting back to the topic at hand. Why 3 Legendary Ocean's? Ditch one or two and get Umi or Umiiruka instead.

I changed it according to what you all said, getting cards is a problem I probably won't have much trouble with, I will deal with later anyway. The deck type I want is basically a simple Water Beatdown with Umi/ALO, I don't like Neo Daedalus decks as they are too annoying to execute really well. Basically, I will probs stall and fight possibly until I get Umi/ALO and good water monsters. Feel free to say anything else you want to change. Thanks for the support!

One thing to note, y no one else has brought this up I have no clue, book of moon is limited.

Traded 1 Book of Moon for Umirika

Bump...................

Bump...................

take away
1 legendary fisherman
serpentine princess
1 gagagigo or 1 penguin soldier or 1 nightmare penguin for

3 hydroggedons.

ALso you have 2 alo's 1 umi and 1 umiiruka
4 field spell cards and terraforming is overkill and when your losing they could all be dead draws.
So I would definitely take out 1 umi for a legendary ocean
Or just run 3 ummiruka.
But then you'd need to take out the bugroth and the mermaid knight for more powerful non effect cards.

So make a decision with your field cards because it looks pretty ugly to me right now

Edited to what you said.