It turns out that there are more than a few creatures that get a lot better when you turn them into artifacts and give them a mana ability, especially if you want to give yourself a repetitive stress injury in your wrist by tapping and untapping Horseshoe Crab, Simic Ragworm, Soliton, or Morphling until they kick you out of the LGS
A Mint condition card stored badly can lose significant value over time
Haste is huge for a Prowess deck where you are the aggressive deck and once your opponent has mostly stabilized, haste can be the difference between burning out your opponent for the final damage and losing
Even putting aside the fact that Teyo is a legal adult and Rat is sixteen (and mentally about eight), there are egregious instances of older people giving Rat disturbing levels of attention, including the author: [Rat] stepped into the shower and let the water flow over her face and hair
I would be interested in hearing your comments about the other issue I brought up concerning the two sides I do not believe that the updated art has good flavor
Some colors may be worth more, like if they have a purplish tint around the border, for instance