Brick, the Immortal Tank

Defender, First-strike, Trample, Indestructible.
When Brick, the Immortal Tank enters the battlefield, create Legendary 1/1 puppy token
named Dusty.
When Dusty leaves the battlefield, Brick, the
Immortal Tank loses defender.
{b/r}{b/r}, {t}: Brick, the Immortal Tank fights target creature you don't control.