Gandalf, the Grey

This spell can't be countered.
Protection from black and red.
You have no maximum hand size.
When Gandalf, the Grey enters the battlefield or becomes tapped, each player discards their hand.
You draw cards equal to the number of cards
discarded this way.
{t}: Draw a card and gain 1 life.
If you have more than 7 cards in your hand
during your upkeep, transform Gandalf,
the Grey.