Thassa's Oracle, Wheel of Fortune , Mind Stone, Fellwar Stone, Burning Inquiry, Dack Fayden, Dockside Extortionist, Breakthrough, Ponder, Submerge and Sage of the Falls maybe of interest to you.

I love this deck!

Howdy there! Maybe consider some of these!

Duals

• Sulfur Falls
• Scalding Tarn
• Fiery Islet
• Shivan Reef
• Spirebluff Canal
• Cascade Bluffs

Multi/Colorless

• Ancient Tomb
• Prismatic Vista
• City of Brass
• Mana Confluence
• Reflecting Pool
• Exotic Orchard
• Strip Mine/Wasteland
• Forbidden Orchard
• Gemstone Mine
• Gemstone Caverns

In the end, I would definitely consider all of these lands as they are very helpful and can help your journey go much much MUCH smoother, especially in commander! If this helps, be sure to check out some of my decks, (Double Trouble EDH) among others! Upvote them if you like them and be sure to give me suggestions if you have any, I would appreciate it. Anyways though, hope this helps, good luck on your deck, and have a great day! Happy tapping!