Its difficult to upgrade since you have to adhere to such a restrictive color identity, but its exceptionally easy to scrap for parts since every card can technically go in any other deck
A Masters 25 booster box comes with 24 booster packs, which is exactly whats needed for an 8-player Draft, three boosters per player
Kormus Bell which turned all Swamps into 1/1 creatures, Tawnoss Wand which made your creatures with power less than 2 unblockable, Tetravus a 4/4 flying creator of 1/1 flyers and Triskelion a 4/4 that could deal limited direct damage were all removed from the play set as well after Fourth Edition
Stalwart Unity is more of a personal preference than anything else, because I like group-hug-type decks that look to pillow fort, draw cards, and then hopefully win the game eventually
This is a one-card army capable of turning the tide of any game in your favor
Making sure to support him with plenty of disruption and recursion cards allows Emet-Selch to continuously discard and then cast spells from the graveyard at a reduced cost, which also paves the way for a quick transformation to make him even more powerful