Stopping your opponents from casting spells
The problem is that, in most decks, Harnessed Lightning kills four-toughness creatures at instant speed, and in black decks, Grasp of Darkness and even Fatal Push offer the same power, so it will take a pretty specific build (a deck that doesn't care about energy, doesn't want a Lightning Axe package, and isn't playing black) for a deck to really want Cut // Ribbons over the other available options
One of the more unique things with this set are the number of legendary creatures included in the set, a total of 39 spit across classic creatures and new playtest ones
Enduring Innocence won't have those creature types when its last ability returns it to the battlefield because it won't be a creature.
Venerated Loxodon over Benalish Marshal might be a part of that integration, but Im starting from the assumption that I should be aiming to attack on Turn 3 and kill on Turn 4 and not simply pump on Turn 3 and kill on Turn 5 with overwhelming power