Grabbing shock lands like Breeding Pool allows you to fix while you ramp and you really cant get a much better effect for 2 mana
Will effect the board in a big way in just about any deck or will allow for a very strong deck to be built around it if it is a commander
If you pay two generic mana when tapping Three Tree City, you can generate a ton of mana for any color equal to the number of creatures you control that are a certain type
And just look at all the Knights in the format: Benalish Knight, Burning Shield Askari, Cadaverous Knight, Fallen Askari, Femeref Knight, Knight of Valor, Searing Spear Askari, Shadow Rider, Southern Paladin, Suq'Ata Lancer, Zhalfirin Commander, Zhalfirin Crusader, and Zhalfirin Knight
Its a little dark, but its also very funny
Poor Unfortunate Souls is a good choice to sing at turn 3 to control the early game, giving you time to set up