There are eight Praetor characters and 18 unique praetor cards in Magic, representing each color with a few extra in black
This is a solid spell and red decks will be happy to play several copies, but it would have been much stronger if it were a twist on Lightning Strike or even just a reprint of Volcanic Hammer[Grmtg_card] (which isnt Modern legal)
Showcase frames are part of the Booster Fun initiative and are meant to up the appeal factor of certain cards in each set
For those who dont know, Muk and Garbodor share the same Ability, with the exception that Muk doesnt require a Tool (probably because they werent introduced yet) and Energy Removal and Super Energy Removal work similarly to Crushing Hammer and Enhanced Hammer except that they dont require coin flips
Adam's presentation was well received and everyone agreed that someday we should do that
If you want to run locations, then when you come to build a Lorcana deck you should prioritize these cards