Heimdall, The All-Seeing

Reach, first strike
Whenever an opponent draws a card, that player reveals a card from their at random to you.
You may look at the top card of your library at
any time. You may cast spells from the top of
your library.
Spells you cast from the top of you library cost {1} less to cast.
Whenever you cast a spell from the top of your library, draw a card.