After that, it rolls, finding an instant or sorcery in our library or graveyard to put in our hand
Dragonstorm Globe
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
its no wonder this Enchanted version of Ariel is currently commanding the very high, average selling price of around $400
That's not to say there aren't issues, though, and I definitely think there's a number of ways that this can be improved upon
That might seem like it is not worth it as haste is just speeding you up a turn and while the shroud is significant the main reason you want these is the haste