Bug, The Roach Muncher

When Bug, The Roach Muncher enters the battlefield, create three 1/1 green insect creature tokens.
{g/u}: Sacrifice an insect you control, Bug gets +x/+x where x is that creature's toughness.
{g/u}{g/u}{2}, {t}: Create a 1/1 green insect creature token for each insect you control.
{g/u}{x}{x}, {t}: Gain control of target insect with
toughness x until end of turn.