It led to confusion, and we were ultimately forced to change the name of the non-rotating format from Classic to Vintage
With Shelldock Isles trigger on the stack, next you sac Lions Eye Diamond--putting Lions Eye Diamond and Kozilek into your graveyard
Destined Rivals [A Good Starting Point Today] Last, but definitely not least on this list is the fairly recent Destined Rivals set
Kaladesh block gets 30 weeks of the spotlight, and if Ham (the codename of the 2017 Fall set) releases on September 29 the most likely extrapolation based on history then Amonkhet block would get shortchanged with only 22 weeks of the spotlight
If Breaking // Entering is on the stack (because you fused it), its converted mana cost is 8
Much like all other similarly mechanical cards before it, it provided a very cheap value permanent that could provide a lot of advantages so long as it stays on-field