One of the things I like to do when tweaking a returning mechanic is to find some variable we haven't messed with yet
However, if you pay the bargain cost, it instead deals 3 damage to that creature and you get to scry 1, too
Cards like Kura, The Boundless Sky from Kamigawa Neon Dynasty or Needlethorn Drake from Strixhaven: School of Mages make for reliable ways to keep yourself safe from larger creatures
While needing cards in the graveyard for escape is a limiting factor, it's hard to imagine that, even discounting its power as a ramp spell on Turn 3, Uro, Titan of Nature's Wrath isn't better than Elite Guardmage as a creature thanks to bigger stats and a more repeatable trigger
See this video by YouTube account Mountain Man Magic for a humorous rundown of the differences
What sets this card apart from other zombie lords is its ability to give all zombies Menace until the end of the turn