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
While only OK against aggro decks the card has proven incredibly good against midrange, control and combo decks too
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
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
Hexdrinker Hexdrinker is a 1-drop that does it all
Whenever equipped creature attacks the monarch, destroy target tapped nonland permanent that player controls