Brewing Pool

Brewing Pool comes into play tapped
{t}: Add {u}, {r}. or {g}
{u}{r}{g}, {t}, Sacrifice Brewing Pool: Search
target player's library for a card, reveal it and
remove that card from the match.
Then reveal a legal card from outside the game
and shuffle it into that player's library.
—
"Do you not know what this spell does?"