This is essentially a zombie deck in disguise, with the player able to fill their graveyard with fallen heroes, and then resurrect them in turn
Where do graded cards fit into all of this
By grabbing protective enchantments (Solitary Confinement, Transcendance, Phyrexian Unlife, etc.) first, then following up with Stax pieces to lock opponents (Blood Moon, Stasis, Humility, Back to Basics etc
Repartee builds on heroic and valiant and the constant ways to target creatures with instants and sorceries
Named for having the same mana ability as Ravnicas signets (Azorius Signet, for example), these enter untapped and fix both of your colors