Though you may expect a Zombie to be the commander of a Zombie deck, Gisa and Geralf are necromancers that prove an exception to the rule
If you dont need the tokens, start pumping your board, or if you dont really have any creatures, start making them
(They attack each combat if able and attack a player other than you if able.) The card types in Magic include artifact, battle, creature, enchantment, instant, kindred, land, planeswalker, and sorcery
Three-mana planeswalkers have traditionally been very powerful in Standard, and Im expecting more of the same from Liliana, who protects herself as well as or better than any of the previous ones
Meanwhile, on the colourless side, we have Zhulodok, clearly of Ulamog's brood, but a separate entity
Standard set releases generally arent as flashy as specialty products or Masters sets, especially once you are dealing with sets prior to Kaladesh , but Khans of Tarkir allows us to zoom out a bit from more recent releases and practically demonstrate the virtue of waiting 5+ years for a payoff