Unlike remastered sets in the past, the Khans of Tarkir coming to Arena will be the entire set
You generally want to keep Ravager alive until the end, with the last movement of counters targeting a Hangarback Walker, as each counter will create a 1/1 Thopter which can then be sacrificed to the Ravager again, yielding the most amount of counters, which can then be moved to either an Inkmoth, Ballista, or Zabaz with flying to secure the win
The Rule Box for the Mega Evolution rules also has the Mega Evolution symbol on it
There's also a consideration for commanders that give your opponents more choices to make, since it adds to the interactivity of the game
This is a huge game-changer when youre not sure if youve equipped something correctly early on in a game, and makes messing around with mathematical equations in the late game incredibly easy
Long Lasting Durability is a big factor when choosing card sleeves especially if you play with your decks frequently