The idea behind this was to keep the group from being led by simply following the more experienced designers
Each 100-card deck is ready to battle
Mightform Harmonizer While giving all your creatures the Tifa Lockhart effect is a strong idea, I like how Mightform Harmonizer also helps to station permanents by doubling its own power
While maybe not in the running for a format staple, I can see Angel of indemnity becoming a solid choice in White decks of all stripes
If you really think about it, there have been cards of every type that have been too good, overpowered, and unhealthy like Skullclamp for equipment, Jace, the Mind Sculptor for planeswalkers, Yawgmoth's Will for sorceries, and so forth, but Wizards wisely realized that you don't just give up on equipment altogether because they messed up with Skullclamp or planeswalkers because they had to ban Jace, the Mind Sculptor in Standard
We also know that each pack of March of the Machine will contain at least one Battle card