Scoby Super Dog

Scoby Super Dog's power and toughness equals {x}+4
{1}{r/g}{r/g}{t}Put a +1+1 counter on Scoby
{r/g}{r/g}{t} Put a barking counter on Scoby
{1}{r/g} Untap Scoby Super Dog.
{2}{r/g}{r/g}{t} Remove 3 barking counters from Scoby Super Dog creatures your opponent control cant block this turn.