Alston, the Hero

Double strike
{r},{t} Alston, the Hero does 1 damage to any
target.
Whenever Alston, the Hero attacks, you may cast
an instant or sorcery spell with converted mana
cost less than or equal to Alston, the Hero's
power without paying its mana cost. If you don't,
put a +1/+1 counter on Alston, the Hero.