IM A NEWFAG

I HAVE A VERY IMPORTANT QUESTION

PLEASE HELP

Is the Guarantee ATTACK TYPE ticket worth it?

Honest question, what's the best strategy with Guarantee ticket?
Use it at the very start to try to luckshit one of the limiteds (like NY Aru or NY Mutsuki)?
Or use it at the very end on roll 190?

So anons, did you buyed it?

>43% of getting a NEW not farmeable student

Should I buy it?