Pidgey

Flying & {w}: Monstrosity 1(Activate this ability
only when you could cast a sorcery. Give this creature
one +1/+1 counter, this ability may only be used
twice)
When this creature deals combat damage, deal 1
damage to target blocking creature.
Pidgey gains First Strike after the first cast of Monstrosity, then gains Vigilance after the
second cast.