Marching Field

Marching Field enters tapped. When Marching Field enters the battlefield, you lose 1 life.
{t}: Add {c} to you mana pool. Put 1/1 colorless Sax Squirrel token onto the battlefield.
{t}: Add {u}{g} to your mana pool
{2}{t}: Put a +1/+1 counter on all squirrels. Put a -1/-1 on all non saxophone or squirrel creatures.