Test convergence of series

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Test convergence of series: $$\sum_{n=0}^ \infty n!z^n$$

What I have done using ratio test:

$\lim_{n\to\infty} \lvert \frac{(n+1!)(z^{n+1})}{n!z^n}\rvert$

$\lim_{n\to\infty} \lvert (n+1)(z)\rvert$

And here I am kinda stuck. Do I plug in $\infty$ for n and get $\infty$ as the answer?

If $L=\infty$ then it diverges since $L>1$?