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[[Dungeon Master]], [[Ellywick Tumblestrum]], [[Grand Master of Flowers]], [[Lolth, Spider Queen]], [[Mordenkainen]], and [[Zariel, Archduke of Avernus]] are Planeswalkers that were released at the same time as the set. Card and Planeswalker abilities innovated for this set have been used in subsequent sets, but not the widely proclaimed ones. The most enduring have been Alignment, Passive Abilities, and Emblems; the latter being a simple but effective way of giving card abilities a "toggle", or On-Off switch.