There are constant incentives pushing you towards PvP, but there is enough content for a solo player that you can fare well even by only sporadically dueling other humans for the needs of the occasional mission
Buy Pokmon Legends Z-A at Woot (US) or ShopTo (UK)
But I also want to look out for cards that were excluded from the precon, like Ebonblade Reaper, which can drastically change an opponents place in the game, or Primordial Mist, which can turn manifested instants or sorceries back into spells
You can utilize its channel ability to discard it and blow up any artifact, enchantment, or nonbasic land
Of course, one can conjecture that it will be very similar to them
And I didn't even realise they was worth any money at all