Beast Decks can easily become powerful. Enraged Battle Ox gives all of your Beast Monsters trample, which is when a monster deals damage to the opponent even if their monster is in defense position. These decks KILL decks with mass Spear Dragon, Goblin Attack Force, and Giant Orc. Smashing Ground is an obvious choice; kill the monsters you can't trample.
You can use Gaia Power in this deck simply because Berserk Gorilla and Enraged Battle Ox are both Earth. EBO is the key card in this deck; trample is just such a useful attribute to add to your beatsticks that you should try to get this out FAST.
Wild Nature's Release is an interesting card. Most people think it works like Limiter Removal; double the attack of all your Beasts, and destroy them at the end of the turn. It's effect isn't quite that. It raises the attack of ONE of your Beast or Beast Warrior monsters by their defense. For example, Berserk Gorilla is a 2000/1000 attack monster. If you use Wild Nature's Release on Gorilla, it would make it a 3000/1000 attack monster. Big Koala is a 2700/2000 attack monster, and if you use WNR on it it becomes a 4700/2000 attack monster. Add a Trample into the mix and you can have some FUN.
A nice combo that was introduced to me was Wild Nature's Release + Big Koala + Flashing Twin Swords - Tryce. It was originally used in LondonMafia's Big Koala Deck, which was really a joke deck to play around with. By using WNR on Big Koala it became a 4700/2000 monster. With Tryce, the monster loses 500 attack but can attack twice. So LM would have a Big Koala with 4200 attack and trample attacking twice. Eventually, he realized using it on Berserk Gorilla was a pretty nice idea too. This combo was quickly carried over to Beast decks, but I haven't seen it used in Machine decks much(when Limiter Removal does the same thing as WNR but better). It's a fun idea to use, and I'm going to include it, but you can use other cards over the Tryce Swords. Wild Nature's Release should be in every Beast Deck though.
Monsters - 17(3 Tribute, 14 Non-Sacrifice)
Magic/Spells - 19
Traps - 4
