I need help oon this deck. Any help is welcome. Thanks in advance.

Water 19
4 corile
4 hulcus
2 merfolk
3 emeral
2 thrash crawler
2 energy stream
2 brain serum

Nature 14
4 bronze arm
4 mana nexus
2 terahorn
2 dimension gate
2 barkwhip

Darkness 15
4 terror pit
4 locomotiver
4 bloody squito
3 lost soul

4 Light
4 holy awe

-4 squito
+4 ghost touch
-2 serum
+1 stream
-1hulcuse
+2 emeral
+2 merfolk
+2phantom fish

and i dont know how to fix green cause i dont run it
but i do no there needs to be less

- 2 brain serum
+ 2 phantom fish

- 1 hulcus
+ 1 merfolk
+ 1 emeral

- 2 dimension gate
- 2 burning mane
- 2 barkwhip
- 1 mana nexus
+ 2 cryptic totem

- 2 bloody squito
+ 2 hopeless vortex
+ 4 ghost touch

4 corile
3 hulcus
3 emeral
3 merfolk
2 stream
2 phantom fish
2 thrash crawler

4 bronze arm tribe
3 mana nexus
2 rumbling terahorn
2 cryptic totem

4 terror pit
4 locomotiver
4 ghost touch
2 bloody squito
2 hopeless vortex
2 lost soul

4 holy awe