Go get your Nykthos, Shrine to Nyx
Karlov gains two counters whenever you gain life, so you want to maximize the number of times you gain life, not how much life you gain.You can do this through cards that gain you life whenever common things happen, like Blood Artist, Drana's Emissary, and cards with extort
Spend some time considering all your options and how the cards best synergise to get the most out of the cards and have the best playing experience.
Abomination of Llanowar Abomination of Llanowar earns a spot on the art and flavor text alone
Odric decks often appear underwhelming on the surface, but quickly become visible threats once players realize that your entire board is now toting double strike, flying, and lifelink
If the list is removed and reprints of these cards become available, however, more and more people would be interested in these formats