Placing an enlightened counter on Faceless Haven, and then never animating the land for the rest of the game, makes it nearly impossible for an opponent to win the game
A single card can have synergy with the rest of your decksay Chief of the Edge in a deck with lots of Warriors
Take an extra turn after this one
For example, if Strata Scythe's imprint ability ("When this Equipment enters, search your library for a land card, exile it, then shuffle.") triggers twice (probably because it somehow entered attached to Cloud), up to two total land cards can be exiled
While blinking your own creatures for value is the obvious first option with Phelia, it's important to note that Phelia can affect the opponent's board as well, opening up avenues to attack through problematic blockers