Slicer, Hired Muscle Alexios, Deimos of Kosmos As you know, these are creatures that visit your opponents every turn
With Commander, you get to choose whoever gets the gifted card, so you can choose to gift whoever is the most behind so you don't push someone's advantage too far ahead of yours
For example, the plastic used for the sleeves makes much easier to shuffle your cards and ensures a good (and random) distribution of your cards
But i guess it would be not be easy to apply these methods to identify the reason of relatively subtle saturation differences in examples as posted below
Timeless The Timeless format is much like Historic in that it is exclusively on Arena
Power cards help to circumvent the natural flow of play, gleaning small advantages, like an extra move here, an extra attack there, or even pushing an enemy fighter once space so they're no longer in a position to fight you