I'd start out with one or two tutors that can get your wincons, but if you start working your way up the power scale, having more will be necessary for keeping up with your pod
Combined with Exploration or Fastbond, the Horn quickly becomes an engine from which you can draw three, four, five, or more cards a turn, at no cost
FromTheShire: They definitely have a graveyard/sacrifice theme between this set and the extant Chatterfang, Squirrel General, and this is a great piece if you're sacrificing your stuff a bunch
Our example Muldrotha deck wants to always play a land for the first 3 turns, ideally turn 4 as well
They are legion, and we'll find a handful among the best card draw effects
Maybe your legendary creature was Standard-legal once, and youve missed playing with it ever since it rotated