The easiest way to think of it is this: if you know you always want to see at least one copy of a particular creature or spell (or anything else) each game, then you want four of it
When facing off against an opponent piloting a reanimator or graveyard-focused deck, a commonality within the Commander format, Bojuka Bog allows a player to deprive their opponent of a key resource without requiring a single mana to be spent
Granted they enter tapped, but if you can station them sufficiently, these two lands do a decent imitation of Gaea's Cradle and Tolarian Academy, two busted lands from Urza's Saga
The Summer of Legend continues with one of the most exciting features for in-store play: the return of Mystery Booster: Convention Edition
Throwing more artifacts onto the battlefield could also help with other artifact decks, particularly those that focus on affinity and improvise to gain their value
Zur, Eternal Schemer is certainly no Zur the Enchanter, but it brings a fresh look while maintain the original aspect of the card
