Where The Lost Caverns of Ixalans main set primarily covers the expedition to the core of the world, The Lost Caverns Commander decks put the focus on the planes main factions and their typal synergy
Of course, there's some variance involved
Lands As for the lands in the MTG Death Toll precon deck, it should have a total of 38 lands, including Dryad Arbor
For mana bases, consult the Lands Reference for a side-by-side comparison of dual land cycles at every price point
Witherbloom's Professor Dellian Fel is certainly a card we're already seeing used in Standard, and it has some big potential within Commander too
The abilities let you untap an artifact or creature and potentially put a +1/+1 counter on it, search your library for an artifact card with mana value of one or less (such as Sol Ring, Skullclamp or Voltaic Key) and put it into your hand, or create an emblem that helps you turn artifacts into Robot creatures or throw +1/+1 counters on an artifact