原文Invisible Woman's first ability will check as your beginning of combat step starts to see if you've cast a noncreature spell this turn. If not, the ability won't trigger at all. You won't be able to cast a noncreature spell during your beginning of combat step in time to have the ability trigger.
原文You don't choose a target for Invisible Woman's last ability at the time it triggers. Rather, a second "reflexive" ability triggers when you pay this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.