There are enough lands that produce 2+ colors of mana these days that you can reliably cast cards of two different colors while still making sure every land in your deck produces White mana
Among green Auras for MTG , it stands out for how easily it punishes opponents for building up their own board
To help fix your three colors you have the on-color shock lands from Ravnica , the check lands from M10 and Innistrad , the slow lands from Midnight Hunt and Crimson Vow , and a cycling land from Amonkhet (other cycling lands are good budget options, more on this below)
(The same goes for protecting Chalice of the Void or any other lock pieces.) Emry will undoubtedly form a great partnership with both Goblin Engineer and Sai, Master Thopterist to form a highly efficient value engine
Also I really love the art on this
Magic Jumpstart card list & price guide