The MTG Land Calculator is a simple tool but provides helpful information for all deck types and formats
With Kiora, Sovereign of the Deep, however, you can jam as many Krakens, Leviathans, Octopi, and Serpents into your deck as you can while accruing more and more value from them
Im by no means going overboard on this card, but adding a few to the collection or vault if you can get them priced low enough ($15 and under to me is a great deal) wont hurt anyone
After all, once of my favorite formats of all time is Five Color, a deck with 250 (now 300) cards with all five colors required
Wayta, Trainer Prodigy Introduced in the first go-round of Ixalan was the damage trigger ability of enrage