SD23 boss card?

Saw this on Shriek
海皇帝 ポセイドン
水属性 レベル7
【海竜族・効果】
このカードは自分のフィールド上に存在する魚族・海竜族・水族モンスター１体をゲームから除外する事で特殊召喚する事ができる。１ターンに１度、手札から魚族・海竜族・水族モンスター１体をゲームから除外する事で、ゲームから除外されている自分の魚族・海竜族・水族モンスターの数まで、相手フィールド上のカードを選んで破壊する。このカードが破壊される場合、代わりに自分フィールド上に表側表示で存在するレベル３以下の水属性モンスター１体を破壊する事ができる。
攻撃力/2600
守備力/1800

Direct from Translate :
Emperor Poseidon sea Wed 7-level attribute Kairyu] [effect-tribe This card can be Special Summoned By removing from play 1 monster tribe, water tribe Kairyu-finny tribe that resides on their own field. By once, and remove from play 1 monster tribe, water tribe Kairyu-finny tribe from your hand into a turn, up to the number of monsters and water tribe Kairyu-finny tribe of their own that are excluded from the game, the cards on your opponent's side of the field chosen to destroy. If this card is destroyed, you can destroy a monster body of water below the level present in three face-up on your side of the field instead. / 2600 attack power / 1800 defense force

What I gather :
Emperor Poseidon SeaWeed
WATER / Level 7
[Sea Serpant • Effect]
This card can be Special Summoned by banishing a Fish-Type, Sea Seprant-Type or Aqua-Type monster from your side of the field. Once per turn, banish 1 Fish-Type, Sea Serpant-Type or Aqua-Type monster from your hand, destroy cards your opponent controls equal to the number of banished Fish-Type, Sea Serpant-Type or Aqua-Type you have. When this card on the field were to be destroyed you can destroy one face up Level 3 or lower WATER monster instead.
ATK 2600 / DEF 1800

Looks very player made to me, can be considered quite imba, cos Trap Stun into this guy = destroy at least 2 cards, 1 for your summoning condition, 1 for your cost of activation. Has potential. Maybe a bit too much, but you never know.