This is the first main Core Booster set, with both an OCG and TCG release, whose OCG version includes OCG -exclusive cards
9 Poncho-Wearing Pikachu 203: XY Promos (Promo) Market Price: $248.03 Another Poncho-Wearing Pikachu promo card, this one featuring three Pikachu, one in a Mega Audino poncho, another in a Mega Lucario poncho, and the final one in a Mega Slowbro poncho
The colourless lessons there are do the things this can do better generally speaking
Illustrated by Una Fricker Part of the Reserved List Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
This does it all - removal, card draw and player kill
Once you have a pretty good idea of how to spot objective types of damage, it makes it easier to make a somewhat accurate determination of the overall condition