Much like #3, Static Orb, it usually ends up in decks that can take advantage of it, but even there its got much more to do with the commander than the card itself
Magic is a game of pattern recognitionrecognizing your options based on the information you see on the board, reading your opponents deck based on metagame awareness and what they represent through their mana base, predicting and sculpting the draft based on what you see in the pack, and reading the trends we see in cards as theyre printed
There are downsides to Phasing, of course
Nearly all of them have been officially revealed, and it's a mixed bag
[Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Card Set(s) -Memorial Collection- [EB-01] CARD VIEW EB01-057 | SR | CHARACTER Shirahoshi (Parallel) Attribute Wisdom Block Icon 2 Effect When this Character is K.O.'d by your opponent's effect, add up to 1 card from the top of your deck to the top of your Life cards
It debuted on cards like Astral Steel and Sprouting Vines, which were mediocre on their own but gained value if you played them as the second or third card that turn