Mickey Mouse, True Friend has a valuable variant that removes the flavor text in the card box in favor of making space for a character signature
This is good in two-player matches, but unparalleled in multiplayer games as you literally take your rivals further from victory while boosting yourself forward
How do I know if my card is "Shadowless"
This is mostly to avoid the look of impropriety, as being able to see the back of the card means theres the possibility of marking (i.e., putting marks on certain cards so you can tell when they pop up in your deck without drawing/scrying them)
By casting your flash creatures at the end of your opponents turn, they will not have summoning sickness during your next turn, when youd cast them otherwise
This card lends itself well to aggressive and reanimating artifact decks in Commander