Beastite and Beast Wall are the two cards that are the most replaceable, though Beastite is great for a little extra damage
It counters any spell without requiring mana, which makes it dominant in Legacy and Vintage
Even though you wont find Liliana in any non-Zombie deck, I still could see it having an impact on Standard in the next couple of months before rotation, as many of the same Zombie cards that were in Gerry Thompsons Pro Tour Amonkhet- winning deck are still legal in the format right now
Barkskin of the Millennium Tree 7% of decksPercentage of decks that could play both Channel the Bleak Expanse and Barkskin of the Millennium Tree that play both
The value proposition is the opening experience, the guaranteed SR slots, and the chance at a chase card that far exceeds the box cost
Very high value and can be used in more than a few budget Commander decks