Idea Spell

I'm not sure if this is the topic for an idea, so I'm sorry if I'm wrong.

I just came up with an idea for a spell, and that idea is invisibility. Being invisible for like, 5 seconds, and for 2 of the 5 seconds youre also invisible for vision wards. Because just being invisible is nothing special, if you want that you should get evelynn... I thought it would be fun for escapes or surprise attacks!

I just made this up and haven't really thought about it. I wanted to get it out there so I'm looking forward to your opinion.