Certain Lillie cards have high market prices due to limited availability and exclusive artwork
Building a deck The only established rule when building a deck in Pokemon TCG is to make it strictly a 60-card deck
The Diamond & Pearl + Platinum-era Lv.X mechanic is live across thirteen distinct Sinnoh and Platinum chase pulls with the silver/ice-blue/white shimmer overlay, the HGSS-era Prime + LEGEND tiers are live, the full Black & White era ships with Full Art Pokemon-EX, Dragon-type cards (Dragons Exalted), and the first-ever Gold Secret Rares (Boundaries Crossed onwards), the XY era spans the inaugural Mega Evolution debut through Primal Clash's alpha/omega Ancient Traits and the gold BREAK Evolution cards, the Sun & Moon era debuts GX, and the complete Sword & Shield era introduces Pokmon V, VMAX, VSTAR, Radiant, Amazing Rare and Trainer Gallery cards
You can definitely get lucky, but you can also buy hundreds of packs and still not find a single rare card. With new packs costing around $10 to $15, thats a big risk, meaning you can lose a lot more money than you could gain
The first Pokmon TCG depicting Iono was released as part of Clay Burst [SV2D], half of a dual set alongside Snow Hazard [SV2P]