Particularly for Commander players, Day of Judgement is a pretty scary threat, and its Foundations print just makes it that much more so
At this point, I'd suggest that you do an analysis of all the key local elements that might concern you, such as the local time zone, where you can go buy food, what time your event will take place, and by when you need your decklist submitted
The deck seems to be pulled in two different directions here, with your classic land-based ramp synergies in Tatyova, Benthic Druid, and Scute Swarm
1 Galadriel's Dismissal Protect Your Realm Single-target protection spells like Legolass Quick Reflexes are great for keeping one creature safe, but if youre looking to keep everything you control safe, Galadriels Dismissal is the best choice
You can enable void in a variety of ways: by sacrificing permanents, warping creatures, trading in combat, or using removal