Answer:
Known to accessorize with feathers, trumpets, and harps.
Without a bridle, or a saddle, across a thing I ride a-straddle. And those I ride, by help of me, though almost blind, are made to see.
The stack just might be sent all over. Full of what's new, yet it's nearly obsolete.
A shimmering field that reaches far. Yet it has no tracks, And is crossed without paths.
A certain wizard resided in a city made from this gemstone.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?