RETALIATE & PICKPOCKET!!! Making this Shiny Gigantamax Grimmsnarl viable competitively!

Hey guys! So I was having a discussion with my stream the other day about the viability of my shiny gigantamax Grimmsnarl. I decided to come up with a set to take advantage of its hidden ability. Set details for those interested: 252/252/0/0/4/0 - Adamant or Brave with 0 speed IVs Play Rough/Darkest Lariat/Sucker Punch or Protect/Retaliate w/ Normal Gem UPDATE1: Might start a little later at 3:30 PM EST, very sorry about that. To compensate, I will extend the duration of the stream for a few hours! Also, I will be hosting this raid for everyone today at 3:00 PM EST (12/28/2019) so be sure to tune in and turn notifications on to see when I go live! EDIT - information about giveaway and livestream: Link to signup (not live yet): https://docs.google.com/forms/d/1NKx58woGXi5wOze_-G_CFGm5CpckLk31N192ogLHJb8/edit#responses Link to queue (not live yet): https://docs.google.com/spreadsheets/d/1mhpaIJ2WorM43GA9NqUaj5YBJbiWgF7q9eaCWv_R96I/edit?usp=sharing