These colors rely on powerful creatures and quick buffs, helping you build an army to overwhelm your opponent early in the game
One thing that really stands out about One Piece is its additional resource deck for DON
Great Wall was there to stop that card and only that card er, rather, take away its crappy ability
If a creature you control with power less than 4 becomes blocked by more than one creature, increasing its power to 4 or greater won't change or undo the block
Sure, it has the annoyance of being a Fossil Pokemon, so you're going to have to evolve it from the Antique Old Amber, but it might just be worth the time
Any good EtB or attack-trigger printed in the future can potentially do some crazy stuff with a Rionya involved