As a mechanic I think it's fine, though it does require you to be either getting some good effects from the card itself or rebuying some pretty great abilities to be worth the tempo loss
You may flip Cloud in full Buster-sword glory or reveal Terra in Magitek armor
The standout cards in terms of value include Aurelia's Vindicator, Anzrag the Quake-Mole, Vein Ripper, Trostani, Three Whispers, The Pride of Hull Clade, Vannifar, Evolved Enigma, Massacre Girl, and Rakdos, Patron of Chaos
Same total mana value, and they both dish out counters when they attack, though Expanding Ooze needs a modified creature to target
Lightning Bolt, the premier removal/burn spell, is never dead in this deck, you can use it to finish off players or medium-sized creatures