Slip Into The Wyrd

Creatures in each player's library and hand have
flash.

When an opponent casts a spell with flash, exile the
top card of your library. If it's a spell, copy it. You
may cast the copy without paying its mana cost.
This ability triggers only once each turn. (A copy of
a permanent spell becomes a token.)

After the rise of evil, many wizards tried to
escape into imagination...with varied results.