(Picture pulled from the Pokemon website. All rights reserved to their owner.)
Hey guys! I just discovered this the other day and wanted to share! It ends on Monday at 11:59 UTC (You’ll have to use a converter for your specific time zone. I know I have European readers too.) I believe that it is 7:59PM Eastern if that helps.
You’ll need to load your Sun and/or Moon game. Go to mystery gift and hit receive gift. Select get with password and connect to the internet. Enter PIKACHU20. Speak to the delivery person in the Pokemon Center like any other gift and enjoy your new Pikachu.
For those of you interested Pikachu will be Male Lv. 19 with a Hardy Nature and Static for an ability. His moves are Thunderbolt, Quick Attack, Iron Tail, and Electro Ball.
Here’s the direct page if you need any more assistance:
I hope you all are able to get him in time! Look forward to more Pokemon for a very special Pokemon Halloween Week!