4-6 Sol lands (Ancient Tomb, City of Traitors): your Sol land count and split is entirely up to you and your preference
You may sign me up for bouncy enchantments with great enters-the-battlefield triggers, to include a bunch of them from this very set
My decision to play 16 lands was a bit of a no brainer, though I mightve played 17 lands with Access Tunnel as a bit of a compromise as the 17th land with a higher curve
I'm also running Door of Destinies, Obelisk of Urd, and Coat of Arms, though that last artifact can really backfire when played against another deck that is focused on a single creature type
Leonardo also boosts all your thopters, so cards like Whirler Rogue or Sai, Master Thopterist play nicely with the old Italian inventor around
This fuels a massive 20+ point Drain Life aimed directly at the opponent's noggin