Prowess and magecraft are both triggers that reward casting noncreature spells, but a prowess deck typically wants a board of creatures to pump and attack with, while spellslinger more broadly includes commanders like Niv-Mizzet or Mizzix that never attack at all
All these supporters are played to varying counts in most Pokmon TCG decks, so these are all handy to have in our arsenal
In Memoriam For a long time, I thought it was pretty clear that artifact lands were a huge problem
Boromir is also cheap enough that if you need to sac it, you can easily recast it soon
Myr Battlesphere Myr Battlesphere, aka Battleball, is still respectable top-end if all you care about is making a bunch of artifacts
So well first play Charlotte Perospero and then attack with Leader Katakuri to activate his effect and look at the top card in the opponents deck