Spying Spider

Skulk (this creature can't be blocked by creatures
with greater power.)
Whenever Spying Spider deals combat damage
to a player, look at that player's hand, then
secretly note a card name. When that player casts
a noncommander spell with the noted name, you
may reveal that name. When you do, you draw a
card, lose 1 life, and create a 1/2 black and green
Spider creature token with reach.