For Gruul mana-fixing, I recommend prioritizing dual lands that count as both Forests and Mountains: Cinder Glade, Stomping Ground, Sheltered Thicket, and Taiga (if you're willing to spend lots of money) add layers of extra synergy to the deck because they can be fetched by lands (Wooded Foothills) and spells (Wood Elves) while also empowering cards that care about land types like Valakut, the Molten Pinnacle and Howl of the Night Pack
We can choose odd and it becomes protection from Oko and Swords to Plowshares and then it gets Abrupt Decayed or eaten by an Ice-Fang , (cant protect it using Mother if we name odd) or we name even and it gets Okod , Bolted and cant carry a Jitte
Since youre ideally hitting all your opponents, you can look towards cards that care about that, from the classic Coastal Piracy to cards like Tymna the Weaver and Professional Face-Breaker that explicitly care about damaging each of your opponents
She's an interesting card that deserves her own Dog-themed deck but doesn't make a great commander for Deep Clue Sea
Now, if you put it on a flyer and your opponent does not have flyers, that's good too
(Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Destroy target creature or planeswalker