Ambitious Grub

Hatch {0}
{1}{u}, Sacrifice Ambitious Grub: Draw 3 cards.
{g}, Sacrifice Ambitious Grub: Destroy the target artifact or enchantment.
{b}, Sacrifice Ambitious Grub: Reveal cards from
the top of the library until you reveal an insect.
You may cast that insect as though it
had flash, it cost {0}.