rare porygon card Pokemon Ancient Origins #64 Colorless Rarity Porygon-Z - 105/147 - Reverse

The synergy with Ultron, who can copy every artifact card you cast as a 2/2 robot, appears to be the main reason this price spike has occurred, that combined with the low availability of foil Doctor Who cards

Alpha/Beta / Revised are the most influential sets in all Magic and likely always will be

Holofoil prices range from $0.08 to $999.99

Magic: The Gathering is a trading card game that sees two players going head-to-head to eliminate their opponents character

Zombie Apocalypse, Liliana, Death's Majesty, and Necrotic Hex are zombie-centric board wipes

This gives you enough density for your synergies to work consistently