When AFR was released, the {{Ability|Alignment}} and Passive Ability systems were introduced. Alignment gives selected Planeswalkers "passive" abilities that are triggered when casting a mono colored card of the Planeswalker's color. [[Chandra, Ignited]] was given a Passive Ability retroactively, as were the remaining four PMA walkers as they came out and some mono PWs from subsequent sets. The Alignment name was only used on the two AFR mono PWs, and the three remaining colors of PW in the [[Midnight Hunt]] set: [[Lolth, Spider Queen]], [[Mordenkainen]], and [[Zariel, Archduke of Avernus]]. No cards have the {{Ability|Alignment|Alignment ability}}. Alignment itself was introduced as a way of making mono colored Planeswalkers more attractive, but [[Dungeon Master]] from AFR, [[Arlinn, the Pack's Hope]] and [[Ob Nixilis, the Adversary]] have been given Passive Abilities too, which trigger automatically; in ONtA's case, it is an enhancement of all three of his Loyalty abilities. The Alignment symbol was used for the Passive Abilities of all the the AFR and [[MID]] mono walkers, and Dungeon Master; each PW since has received a unique symbol for their Passive Abilities.