Aithusa, Born of the Conclave

{4}{w}{g}, {t}: Create a 4/4 green and white Wurm creature token with trample.
{3}{w}{g}, {t}: Create a 2/2 green and white Elf Knight creature token with vigilance.
{2}{w}{g}, {t}: Populate. (Create a token that's a copy of a creature token you control.)