Your only real payoffs are basically the Thriving cycle from Kaladesh (Thriving Grubs, Thriving Rats, Thriving Rhino) and the Aether creature cycle from Aether Revolt (Aether Chaser, Aether Poisoner, Aether Swooper)
Even outside of that, Culling Ritual is a great tool to get rid of common mana rocks, draw engines like Mystic Remora, as well as any other powerful cards that come into play quickly
So, the higher your tally, the more likely you are to bust if you continue
Advanced Search Sets Random Syntax Abian, Luvion Usurper (playtest) Academy Elite Aeon Chronicler Aladdin's Lamp Alandra, Sky Dreamer All-Fates Scroll All-Seeing Arbiter Alquist Proft, Master Sleuth Altar of the Wretched Ancestral Anger Arcanis, the Omnipotent Avatar Azor, the Lawbringer B.O.B
Norman connives when he deals combat damage to a player, which is relatively easy to accomplish given he's unblockable