Phasing a creature out effectively renders it nonexistent until its controller's next turn
From the perspective of its inhabitants, it is a hostile place that seems to be actively trying to kill the creatures that have the audacity to live there
Number 0 Language English Legal Formats Commander, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Modern, Pauper, Pioneer, Standard, Timeless Rulings (10/4/2004) The copy is both an artifact and an enchantment, so it is an artifact-enchantment (perhaps even an artifact-creature-enchantment)
As Nagashima put it, they add cards that can quickly turn the tables to make "kids feel like they have a competitive chance
For each non-land permanent milled this way, you lose 1 life and a rad counter. This is quite interesting from a gameplay point of view
Being somewhere between the best of all time and fringe playable on the scale of instant-speed card draw spells is not a bad place to be