digimon greymon card MetalGreymon: Alterous Mode [P-072] (Update Pack) [Promotional Cards] – Digital Heroes [BurningGreymon] Greymon (ST-11 Special Entry Pack)

The most common is upgrading your cheap artifact into Blightsteel Colossus although many fat threats get the Tinker treatments from Sphinx of the Steel Wind to Sundering Titan to Myr Battlesphere to Inkwell Leviathan to the comparably small Wurmcoil Engine

This is the first set Ive arrived early for, as Ive been unable to get cards at other times

110 Count Pack: Includes 110 clear card sleeves for everyday play and storage

Pokmon cards are big business

Upgrading to an instant might not be enough to change this

They're used as a way to get rid of Monsters on your opponent's side of the field, usually ones that have various degrees of protection