What is the purpose of a gladiator beast deck?

I want to build one, but i do not understand why its so good, and how to operate one, can someone give me an example of a world champ G-Beast deck? |||Okay, I'm kind of good with GB so heres some examples:





1. Once they attack (and not destroyed) you can swap that GB with another one in your deck + effect is activated.





2. Sometimes Great Advantage Sometimes Not......... such as:


Advantage:


Winning by there Swapping + Effects





Disadvantage:


Losing with there Swapping + Effects of not how to use it.





3. Best Fusions - Just like Contact Fusion, you just need the right material monsters on your field, and you can put them in your deck, shuffle, and bring out the right Fusion Monster.








Hope that explains everything! |||.... basecly get 3 of each and every gladiator beast that includes the effect of summoning one from your deck when it attacks or is attacked.


3 of both fusions would be nice. and try to get 2/3 of each spell card that has to do with gladiator bests then you will see why they are as good as they are and then you can build your own Gladiator Beast deck without having to copy the world champian deck. you could just look up cards that have to do with it as well thats all im going to say to you bye =)|||3 things. Number 1, they're so versatile because you can switch them out after you attack or get attacked, and pull out the one best suited to the situation. Two, Heraklinos. It pretty much reads you're opponent can't activate spell or traps. Three, Gyzarus. Destroying 2 monsters is pretty rigged, and you can take spells and traps too. The contact fuse.