Using the graveyard is a great way to do that
This is Dimir colors restricted to cast, costs 3 mana, and can only find a card if you have a colored legendary creature out, which the Ring tempting you helps with
Being legendary does too little to slow down Tolarian Academy's awesome ability, and any deck that can play a lot of artifacts will get its hands on way too much mana far too soon
First and foremost we're adding the final great Vampire Aristocrats: Vito, Fanatic of Aclazotz, Pawn of Ulamog, Vraan, Executioner Thane, Voldaren Bloodcaster, all are vampires that provide payoffs for sacrificing things
The color of mana is crucial, with different spells necessitating specific colors