This is especially true in decks that have other uses for creatures outside of attacking, like sacrificing them or tapping them for mana with abilities like convoke
A 1987 Topps baseball card, in all of its wood-framed glory, would be considered cheap and undesirable today
Teach by Example Expansion/Explosion Ral, Storm Conduit Saheeli, Sublime Artificer Thousand-Year Storm Galvanic Iteration Gandalf the Grey Melek, Izzet Paragon Saheeli Rai Protean Raider Najal, the Storm Runner Dack's Duplicate Nivix Guildmage Board Clear Despite sometimes having their experiments blow up in their faces, Izzet mages don't typically set out to make massive, board-clearing explosions
Like most Magic: The Gathering cards, the value of Power Play 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 (Conspiracy)