Heres the list so far: Major gains (30% or more): Minor gains (10-30%): Chalice of the Void, Noble Hierarch, Through the Breach, Doubling Season, Horizon Canopy, Engineered Explosives, Ancestral Vision, Mox Opal, Crucible of Worlds, Dark Confidant, Scapeshift, Brushland, Fulminator Mage, Ancient Stirrings, Lotus Bloom
Ill have more thoughts on this next time (they are largely positive), but for now have a read from Martin Berlin himself about the new addition to MTGO
Then you just it for a treasure, c'mon why wouldn't you want to play this
An object returned to the battlefield with the undying ability is a new object with no memory of its previous existence
It's especially useful for shutting down combo engines with one or two artifact components, since your opponent can't usually start their combo in response