mtg cards that proliferate - All with Proliferate out permanents and anything attached to them as though they dont exist until their controllers next turn.) Magic the Gathering Adventures: WAR

Rebels were the best deck around, and Lin Sivvi was the engine that made the deck run

Vesuvan Doppelganger is a quirky card that can imitate any creature in play (without any enchantments the creature might have)

Its main downside is its lack of keywords, making it easy to block or remove, provided someone has access to creatures or removal spells

As a deck, as you may have guessed from its name, it's all about counters and spreading them across all of your creatures

ptisilkas (via Google) This is the best store

6 Necropotence Became The Entire Game One of the earliest cards to break a Standard meta came shortly after the introduction of Standard in 1995, in the form of Necropotence