Eternal Witness can be a blocker, but more often than not, it would also get back one less card than Reviving MelodyReviving Melody
Madison Li at the helm
It drives a ton of demand into a smaller amount of product, which is cool for a security but not necessarily playing cards for kids
Unexpected Windfall earns its place by drawing the player two cards and generating two treasure tokens (which tap and sacrifice themselves to generate one mana of any color each)
The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, and vigilance
They would likely still be banned if they were regular sized, as one can only imagine the horrors concocted by players who have the ability to name their attacks-- meaning that these attacks may be controversially or offensively named