Elemental Hero deck advice

Sup guys, here is my Elemental Hero deck. Just wanting to see if you guys could give me a little advice to make it better.

Monsters - 21

Ehero Stratos
Ehero Prisma
Ehero Heat
Ehero Avian
Ehero Burstinatrix
Ehero Sparkman x2
Ehero Clayman
Ehero Wildheart x2
Ehero Bubbleman
Ehero Neos Alius
Ehero Woodsman
Ehero Bladedge x2
Ehero Necroshade
Ehero Ocean
Ehero Captain Gold
King of the Swamp x2
Wroughtweiler

Spells - 17

Reinforcement of the Army
Polymerization x3
Future Fusion
Miracle Fusion x2
Fusion Recovery
Super Polymerization
Skyscraper
E - Emergency Call x2
Heavy Storm
Dark Hole
Mystical Space Typhoon x2
Monster Reborn

Traps - 7

Mirror Force
Sakuretsu Armor
Draining Shield
Solemn Warning
Magic Cylinder
Hero Signal
Bottomless Trap Hole

Extra Deck - 15

Ehero Absolute Zero
Ehero Nova Master
Ehero The Shining
Ehero Great Tornado
Ehero Gaia
Ehero Flame Wingman
Ehero Shining Flare Wingman
Ehero Electrum
Ehero Terra Firma
Ehero Tempest
Ehero Thunder Giant
Ehero Wildedge
Ehero Plasma Vice
Ehero Darkbright
Ehero Escuridao

Well in my opinion you should remove all the classic heroes except bladedge and necroshade. Also remove prisma if you're doing that. Add some vision heroes and masked heroes with mask change. Add another miracle fusion and 1 parallel world fusion. Get one more ocean since Ocean+Stratos combo is really good. If you have poly, miracle fusion and parallel fusion in hand at the same time u can summon 3 fusions in 1 turn . Remova sakuretsu armor and add 2 dimensional prison. Remove draining shield and magic cylinder and add 2 dark bribe or 2 black horn of heaven. Remova fusion recovery and reinforcements for 1 more E- Emergancy call since not all heroes are warrior type, for example E-hero Heat. For monsters try: 2 Neos Alius, 2 Ocean, 1 Stratos, 1 Heat, 1 Lady heat, 1 Necroshade, 1 Bladedge, 1 Grand mole, 1 Woodsman, 1 Captain gold, 2 Wildheart, 1 Ice Edge, 2 Kind of the swamp, 2 Voltic and 1 Flash. In the extra deck have only 1 of each: Absolute zero, Nova master, Escuridao, Gaia, Great tornado, The Shining, V-Hero Trinity, V-hero Adoration, Masked Hero Dian, Acid and Goku and Neos-knight. If theres some space left add anything you want. Also make sure you got Mask Change. Always try to get necroshade in your grave, even with future fusion. Also add 1 pot of avarice if you want. To make sure you are safe in the battle phase, all you need will be dark bribe, dimensional prison and mirror force.

Thanks for the help Lunak! I'm definitely gonna try it out.

Also, should I only use one mask change?

Well if you like using masked heroes get 2 or 3. Remember this: Summon absolute zero, mask change on him to summon acid= nuking the opponent's whole field. The most important masked heroes are Acid and Dian . But if you don't like using them then have just 1.