yugioh berserker soul deck DRL3 - Ultra Rare Berserker Soul | Yu-Gi-Oh! Wiki

It has a decent HP pool, the Ability Mountain Stroll lets you move 2 Basic Energy cards into your hand freely, and it has a stacking attack with Ogre Comeback, too

It may be limited to a single extra card per turn, but it wont be long before they have paid for themselves many times over

Yes, the same one you can find on Summon: Fat Chocobo

So basically how it worked during Duelist Kingdom, roughly Ritual Summon Ritual Monsters A monster with a blue card frame that has Ritual written on it is called a Ritual Monster

Third Heart: As Jaden attempts to leave the Academy, Sheppard tells him and you to meet someone at the Volcano