Everflow of Knowledge

Rumble (During your turn you may pay {2} and exile this card from your hand face down. At the beginning of your upkeep, put a rumble counter on this card. You may cast it from exile by removing all rumble counters from it in addition to paying its other costs.)
Draw two cards.
If one rumble counter was removed to cast this card, scry 1.
If two rumble counters were removed to cast this card, scry 2.
If three or more rumble counters were removed to cast this card, scry 2, then draw a card.