The number is so high partially because prominent characters received multiple cards at varying raritiesfor example, there are eight Aangs, seven Kataras, five Tophs, etc
You put that card on the bottom of your library and return the other to the battlefield tapped
Braingeyser Braingeyser still does the work, but as a sorcery that only targets one player
Commonly played examples include Aristocrats where you sacrifice something like Reassembling Skeleton to a mana free sacrifice like Ashnod's Altar and then trigger the Zulaport Cutthroat to hit all foes as your win-con or hitting with Guttersnipe and similar triggers in a Spellslinger deck for your instant and sorcery casts
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