My previous shark support card got me thinking

[Sora1499]

Why not thoroughly support the archetype to make it into a usable deck?

 

Gemini Shark

{WATER/Level 3/Fish/Effect}

Up to twice per turn: You can target 1 Fish-Type monster you control, then apply 1 of the following effects (these changes last until the End Phase):

*Decrease that target's Level by 1.

*Increase that target's Level by 1.

During the turn this card was sent to the Graveyard, you can Normal Summon 1 Fish-Type monster without Tributes.

1600/500

 

Armor Shark

{WATER/Level 4/Fish/Effect}

When this card is Normal Summoned: You can discard 1 card; add 1 Level 5 or lower "Shark" monster from your Deck to your hand.

1700/1200

 

Blade Shark

{WATER/Level 3/Fish/Effect}

If your opponent controls a monster(s) and the only monsters you control (if any) are Fish-Type, you can Special Summon this card (from your hand).  When the Level of a Fish-Type monster you control changes: You can target 1 Attack Position monster your opponent controls; change that target to Defense Position, and if you do, draw 1 card.  You can only use the effect of "Blade Shark" once per turn.

1500/1100

 

Cannon Shark

{WATER/Level 4/Fish/Effect}

Once per turn, you can target 1 other Fish-Type monster you control; this card's Level becomes the same as that target's Level, until the End Phase.  If this card is detached as Xyz Material from a Fish-Type Xyz Monster you control: You can target 1 card your opponent controls; destroy that target.  You can only use this effect of "Cannon Shark" once per turn.

1800/1100

 

Deep Ocean Shark

{WATER/Level 4/Fish}

A sleek master of the deep whose shadow curdles fear in its victims.  By the time you see its silhouette, it is already too late.

1900/0

 

Talei the Shark Rider

{WATER/Rank 3/Fish/Xyz/Effect}

2 Level 4 Fish-Type monsters

When this card is Xyz Summoned, if all of this card's Xyz Material are "Shark" monsters: You can draw 1 card.  All other Fish-Type monsters you control gain 400 ATK.  Once per turn: You can detach 1 Xyz Material from this card, and if you do, you can Normal Summon 1 Fish-Type monster in addition to your Normal Summon/Set this turn.  You can only control 1 "Talei the Shark Rider".

2100/1400

 

Jauz the Regal Shark

{WATER/Rank 4/Fish/Xyz/Effect}

2 Level 4 Fish-Type monsters

When this card is Xyz Summoned, if all this card's Xyz Material are "Shark" monsters: You can target 1 Fish-Type monster in your Graveyard; add that target to your hand, but you cannot Normal or Special Summon that monster, or a monster with the same name, for the rest of the turn.  Once per turn: You can detach 1 Xyz Material from this card to target 1 Fish-Type monster you control with a Level, then apply 1 of the following effects (these changes last until the End Phase):

*Decrease that target's Level by 1.

*Increase that target's Level by 1.

You can only control 1 "Jauz the Regal Shark".

2400/2200

 

Shark Whirlpool

{Spell/Normal}

Declare a Level from 3 to 5, then all face-up "Shark" monsters you currently control become that Level, until the End Phase.  If the only monsters you control (if any) are Fish-Type and you have no monsters in your Graveyard, except for Fish-Type monsters: You can banish this card from your Graveyard; Special Summon 1 Level 5 or lower "Shark" monster from your Graveyard, but it cannot declare an attack this turn.  You can only use 1 effect of "Shark Whirlpool" per turn,