While it's true that this opens you up to potential blowouts when they wipe the yard with cards like Bojuka Bog or Tormod's Crypt, remember that we're going to be drawing extra cards, too, and we'll be putting cards into the graveyard on most turns, meaning we can recover from a Bog (or Draugr Necromancer) fairly quickly
Eleven, the Mage / Cecily, Haunted Mage is by all means a viable commander, with a main focus on card draw
While many casual players liked this card for its easier accessibility, Balancing Act was never (and still isnt) found in any tournament format where Balance is still legal
None of those would budge the value of the ABU versions, because the value of the ABU versions are based on scarcity and collectibility
At 110 HP, it is among the bulkier UBs in the set and for 2 Energy, it does 40 DMG while also taking 20 less damage from the opponents attack in the next turn