Assassin's Trophy is a nice addition to the sideboard, but it isn't 100% necessary if you are trying to upgrade on the cheap, and the same is mostly true of Leyline of the Void (which is probably no longer optimal now that Rakdos / Jund Sacrifice is on the downswing)
There are very few mechanics in MTG that are outright hated
Card Set(s) -TWO LEGENDS- [OP-08] CARD VIEW ST04-005 | SP CARD | CHARACTER Queen Attribute Strike Block icon 1 Type Animal Kingdom Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) [On Play] DON
This cost is usually shown in the top corner of the card
I wonder if these remastered sets count as having been on a plane, because if thats the case, itll be a good while until we go back to Ravnica, and theres quite a few commanders I would have loved to see in a retro or anime frame like Circu, Dimir Lobotomist or Prime Speaker Vannifar