Go big or go home.
So like, Size 3's are a thing. They're the biggest monsters you can call to your field without doing something that just breaks the game's rules, and they can't be accompanied on the field by anything larger than a Size 0. Usually they're also pretty expensive and as a result have huge stats, tons of keywords like Penetrate and Double Attack, and some seriously interesting abilities that, regardless of whether or not it's good, makes you feel pretty good about playing that Size 3.
If you just want to sit on this gigantic block for the entire game (and don't want to play Death Tallica), you've definitely come to the right place. In the current metagame of weapons and open centers, Ancient World stands strong as an archetype that totally disregards all of that. You take one of the eight or so Size 3 bosses in your deck and you plop it into your center and you ride it home to victory. If you like protecting a huge monster for basically the entire game and banking all your money into quality and consistency rather than diversity and versatility, you'll definitely like Ancient World.
Oh, if you like shouting. That too.
Between the Dragon Lords and the Wild Dragons, there'll be enough shouting to go around. But when it comes to pure guts and courage, Raging Spirits have got you covered.