The rest of the Commander 2020 decks are all great choices for decks to upgrade over time, as theyre more focused on mechanics that are already very popular
From there, you can move on to checking out the differences between all Pokmon energy types, which will give you a lot of information on what each Pokmon type is known for and can help you decide which is best for you and the style of play you may prefer
For each damage counter that is applied to Reshiram, the Powerful Rage attack will deal an additional 20 damage
Theres flavor, good theming, utility, and power, with nothing being too close to generic good stuff
One permanent that simultaneously generates mana and cards is always something Im interested in
Worldspine Wurm, Wurmcoil Engine, and Impervious Greatwurm do this the best, though