Linguistics Lesson

After you cast your first spell each turn, reveal
cards from the top of your library until you
reveal one with a name that comes after the spell
you cast alphabetically. Cast that spell without
paying its mana cost. Put the other revealed cards
on the bottom of your library, then shuffle.
"A for Akroma, who flies through the sky,
B is for Boros, who hold their flag high,
C is for Craterhoof, a really big guy..."