Also, building a solid mana base doesnt have to be complicated
Here are the most valuable cards from Pokemon TCG 151 to keep an eye out for
Cards related to "Rayquaza GX".
Beyond the obvious bear typal builds, you can give it cascade with Imoti, Celebrant of Bounty, you can use it to keep your ferocious, formidable, and other power-matters abilities online, and you can discard it when you cast your Indominus Rex, Alpha to give it hexproof and trample
Meanwhile you can run Vhati well on defense by cutting the power of something to one damage
There are many details which could be picked out, but here's a few specific observations: For a long portion of Magic's history, two or three sets would be grouped into a "block" sharing one setting