Drago Soffio di Tempesta
Stormbreath Dragon
Tarkir: Dragonstorm Commander
Mythic
Red 
Flying, haste, protection from white
{5}{R}{R}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)
When this creature becomes monstrous, it deals damage to each opponent equal to the number of cards in that player's hand.