Summoning multiple monsters from your hand quickly can result in a card disadvantage. This will make it more difficult to comeback if your opponent can counter them due to lack of cards that can help with more draws.
Will not be able to special summon when its level is at 1. Using A Legendary Ocean will reduce its level, making it usable 2 times only, instead of 3.
This lets you special summon Hammer Shark without using up your normal summon for the turn, allowing you to summon 3 monsters in a turn, but can only be activated when you have no monster on the field.
A useful search card to special summon a monster from your deck to find one that you need, or special summon another Hammer Shark from your deck, and use its effect to special summon another monster from your hand.
Increasing Hammer Shark's level will increase the number of times Hammer Shark can use its effect, but you will have to send your monster from the graveyard to your opponent. You can give your low defense monster to your opponent, and use Uminotaurus to deal piercing damage to it.
In case people want to know the bosses were:
1 - Black Ray Lancer
2 - Shark Drake
3 - Abyss Splash
4 - Silent Honor Ark
Out of his 4 different bosses monster.
I have to admit Shark Drake was my favorite one.
It was probably the most dominate boss monster for the majority of the series.
It was also the hardest to summon which always made duels awesome to watch!
3 level 4 monsters to summon? lo
Haha, I know what you're saying! Hammer Shark + Needle Sunfish = Black Ray Lancer would be brutal. A good XYZ with the bonus of lowering -500 ATK, thanks to the effect of Sunfish? Count me in!
Shark Drake was my favorite too. Dominating, strong AND badass.