Next time, please include a scan of the said card.
It might work, but here is a reason why it might not:
1. Pachirisu's power only works when you put Pachirisu on your Bench.
So if you want this to work out well, you will need to have a starter with 0 or 1 retreat cost, an Unown Q if your starter has a 1 retreat cost, a Pachirisu in hand and two lightning energy in hand. Quite a set-up. Ideally, you would only be able to have 3 other extra damaging cards, unless you get Unown R or something that will let you draw more