how to tell what set a yugioh card is from If Cards Are Rare How to identify 1st edition

But people on online forums, Reddit, etc

But the shiny is just

Spinarak (Peelable Ditto) #6Common $15.13 Charmander #8Common $0.20 Bulbasaur #1Common $0.25 Venusaur #3Holo Rare $1.01 Slowpoke #19Common $0.20 Numel #13Common $0.17 Snorlax #55Holo Rare $1.32 Lapras #23Holo Rare $0.27 Eevee #54Common $0.30 Sylveon #35Holo Rare $0.84 Armored Mewtwo - SM228 #SM228Promo $283.86 Cresselia - 87/236 (Mewtwo Stamped) #87Promo $0.22 Cynthia - 119/156 (Mewtwo Stamped) #119Promo $0.33 Eevee - 49/68 (Mewtwo Stamped) #49Promo $0.86 Espeon - 89/214 (Mewtwo Stamped) #89Promo $1.60 Hau - 120/149 (Mewtwo Stamped) #120Promo $0.14 M Mewtwo EX #43None $49.75 M Mewtwo ex - 028/059 #28Double Rare $80.00 Mewtwo Collection Battle Arena Decks: Mewtwo EX vs Darkrai EX Elite Trainer Box [Mewtwo X] Elite Trainer Box [Mewtwo Y] $990.00 BREAKthrough Pin Blisters [Mega Mewtwo] (Set of 2) BREAKthrough Three Pack Pin Blisters [Mega Mewtwo X] BREAKthrough Three Pack Pin Blisters [Mega Mewtwo Y] Mega Mewtwo Collection (Set of 2)

Ok Electivire #47 (Pokemon Brilliant Stars) Details All prices are the current market price

o:'Whenever ~ attacks' This query finds all cards that trigger when attacking

Not a terrible ROI