Both Porygon-Z cards are very good, with annoying and disruptive attacks, and being able to get there on turn 2 makes those decks much more consistent without needing to rely on Rare Candy
This is relevant to Scarlet & Violet era cards only, mind, as the rarity symbols and categories changed during this period
CHR Similar to CSRs, these cards feature a Pokmon that was a C or U in the set, depicted alongside a character
1x Leshracs Sigil as Posts Sigil
These two things combined will likely singlehandedly raise the viability of aggro decks in the next format, as well as see Daisy Duck in every Amber aggro deck imaginable
That lets you swarm over the battlefield faster than ever before since every Hare Apparent gives you twice as many tokens