Dropping more creatures next turn to even having mana for abilities and other spells, since it doesnt specify what to spend the mana on, is worth the wait
I always suggest that you prioritize fun over worrying about buying expensive cards like these
Livio, Oathsworn Sentinel I like Livio, Oathsworn Sentinel because you can pair it with other partner cards to access different colors
X promo stands out thanks to the bright combination of green and red colors and the 3D design
As Commander games can often become all about the commander themselves, the ability to save some commander tax for the price of one instance of commander tax is pretty solid
However, once you've run through a couple of practice rounds, you'll be able to get the rules down pat, and you can always check back in with Pokemon's official tutorial and rulebook to make sure that you're playing it right every time