Rubeus Hagrid

Defender, reach, protection from giants
Blabbermouth (When Rubeus Hagrid enters the
battlefield if you control a student you may look at
target player's hand.That player discards a card at
random.)
Non-wizard green creatures you and your allies
control gain +2/+2 (Allies are players you share
a life total with)
—"Then I lent him to Dumbledore to guard the...
Shouldn't 've said that."