Ullimilli, Adept Configurist

When Ullimilli, Adept Configurist enters the battlefield create 4 1/1 Illusion tokens with flying
{w}{u} Sacrifice a illusion create a 3/3 illusion with flying
{w}{w}{u}{u} Sacrifice a illusion with a power of 3 or more create a 5/5 illusion with Flying and "{4}{w}{u} create 4 1/1 illsuions with flying"