Shiduro, Kami of Resilience

Shiduro, Kami of Resilience can block any number of creatures.
{4}{g}{r}{b}: Monstrosity 3 (If this creature isn't monstrous, put 3 +1/+1 counters on it and it becomes monstrous.)
When Shiduro becomes monstrous, dragon and spirit creatures you control gain Protection from creatures with power 2 or less.