If money is changing hands, that's a whole other kettle of fish
Sure, phasing your permanents out protects them better than indestructible does, but blanket protection for everything you control for only 2 mana is nearly unrivaled
If the permanent that returns to the battlefield has any abilities that trigger at the beginning of the end step, those abilities won't trigger that turn
Should the Exhibition bracket exist
Whether its to pay off a debt or cover unexpected expenses, selling part of your collection can be the right choice
It does in fact qualify, though it obviously cant be force-transformed with Tetzin, Gnome Champion or through any other means than melding it with Urza, Lord Protector or Mishra, Claimed by Gix