If you opt to play Go Wide, battle tricks such as Auron's Inspiration, Tifa's Limit Break, and You're Not Alone are all especially helpful for ensuring your creatures don't trade and you deal large amounts of damage
In the larger world of commander, this also means easier activations on land like Cabal Stronghold, Kessig Wolf Run, Rogues Passage, Gavony Township and the Kamigawa Neon Dynasty channel lands like Boseiju, Who Endures on top of their reductions already, just to name a few
You do need to play him in a very synergistic deck to abuse his abilities, so the natural home is alongside creatures with the Undying ability
In the right deck, the cost of discarding a card every time Liliana ticks up her loyalty actually becomes a bonus