Like most Pokmon cards, the value of Pikachu depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Crown Zenith)
Cosmetic flairs are little sparkles, hearts, or type-adjacent animations that can be applied to cards in binders to show off
Shrink Yes, you can buy this card pretty easily online for around $2 but if you are looking to establish that yours is actually valuable you will be opening and climbing into an internet rabbit hole of information
2 Plastic Condition Markers : To keep track of status effects during gameplay
Asylum claims are closely reviewed and require detailed evidence
Zada, Hedron Grinder turns this cantrip into a build-your-own Ancestral Recall, and you can ambush opponents by giving haste to Shu Yun, the Silent Tempest