If you just want to stomp the game I think things are easiest with Squirtle and friends by far, since you can build it into a Rain Dance deck later and have something that's out of any of the CPU trainers' league, whereas Charizard and Venusaur aren't as competitively powerful(though Pokemon Center cheese with Venusaur is pretty entertaining...), but you can really get away with doing a decent version of whatever you feel like running so I'd just go with whatever you think sounds fun
A new way to bring unusual, themed versions of (mostly) existing cards to players, Magic: The Gatherings publisher Wizards of the Coast launched the Secret Lair program in 2019
However, if youre shipping to a private buyer, go the extra mile to protect the cards by putting them at least in a penny sleeve so that they dont fray or bend at the edges during the shipping process
It may not be backbreaking, but it sure sounds like fun
We're using Reanimate and putting it into play for free
Hokori, Dust Drinker Hokori, Dust Drinker is a decent mono-white stax commander, but leaving off blue for a commander like Grand Arbiter Augustin IV or even black with Drana and Linvala leaves some options out of the deck