Medrin, The Last Faery

Flying, Lifelink, First Strike
At the beggining of each combat step you may
double the power and resistance of Medrin,
until end of the turn, if you do, it loses flying
until the end of the turn.
Whenever you cast a creature spell, put a +1/+1 counter on target creature.
Whenever you cast a instant or sorcery spell,
Medrin deals 1 damage to any target.