The idea of regularly recreating Magic is fundamental to the survival of the game, for which the Ice Age development team had to argue
Teferi's Protection Many EDH games revolve around surviving massive wrath effects, and Teferi's Protection, Magic's best phasing card, provides that
It enables infinite loops with creatures like Bladewing the Risen or Sharum the Hegemon, and it sets up an easy target for Sun Titan, which nets you another copy of Titan when it enters the battlefield
For example, you see an ad on Craigslist: "Collection for sale, $350." You get there and the entire collection is two copies of Volcanic Island
The various Merlin cards offer advantages when they are played and when they leave play
Its a tricksy little card, as though it will contribute to being a differently named Demon for Lilianas Contract, it will also get rid of itself eventually