Stormbreath Dragon (THS)

Stormbreath Dragon  (5) 
Creature — Dragon (4/4) 
Flying, haste, protection from white
: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)
When Stormbreath Dragon becomes monstrous, it deals damage to each opponent equal to the number of cards in that player's hand.