Nidulis, Army of One

Whenever you cast an instant or sorcery spell
on your turn. Change the spell's target to each.
Whenever you cast a spell. Put a +1/+1 counter
on Nidulis, Army of One. It gains Vigilance until
end of turn.
If Nidulis, Army of One would be put into the
graveyard from anywhere, Shuffle it back into
your library instead.