Unless youve got ways to place +1/+1 counters on Creatures, youre enticed to cast the Vehicle side Jetfire, Air Guardian first, as a 3/4 flyer that can Adapt 3 to become a 6/7 Flying Creature Youre effectively paying 7 Mana to get that 6/7 Flying robot, but you do have the option of removing those +1/+1 counters for colourless Mana
This is also a good ability to help protect your characters from being challenged after using them on your turn, as readying them will prevent this from happening - though it wont stop them from being targeted by songs, actions or direct attack abilities
The final version kept the essence of the mechanic but had several mechanical hoops to jump through
This is an incredible ability that is sure to turn the tide in a game of Commander
I prefer to start every new commander deck with a fresh set of ultra-pro's but there are plenty of products out there
There's still plenty of goodies to grasp in the play boosters