Battle Warth

At the beginning of each upkeep, target creatures
you control fight creatures you don't control. You
draw a card if your creatures didn't die.
{1}{b}{r},{t}: Create 3/3 Human Warrior token
{3}{b}{r},{t}: Create 4/4 Dragon token with flying
{5}{b}{r},{t}: Create 5/5 Giant token with trample