If your deck does not have access to green, you might have to get more creative by using cards like Tithe, Pilgrims Eye, or even Demonic Tutor to put lands into your hand, cards like Mana Geyser, High Tide, or Caged Sun to get a big payoff, or mana rocks like Arcane Signet, Coalition Relic, and the Ravnica Signet cycle (Boros Signet, Izzet Signet, etc.) to speed things along at the risk of seeing them destroyed later
There arent enough of those cards to flesh out an entire theme yet, and they didnt even include many of the best cards that work in this space
you also get a copier effect for six mana, thats repeatable every turn
Now lets take a look at the different rarities