You take two piles of cards (probably halves of your deck in smaller deck formats) and push them together so the cards interweave
Synergistic Cards Since Aphelia wants to turn Snakes and Gorgons into deadly assassins, it makes sense to fill this deck up with Snake creatures
You have to bounce that character back to your hand when the ability resolves, but if you pick a character like Maribel Madrigal, Family Gatherer, who well see later, you can get a lot of lore out of Camilo in a short amount of time
If anyone has interest in acquiring mtg playtest cards, definitely join one of the misprint groups on FB
This card even gets around Indestructible cards by forcing your opponents to sacrifice their permanents
It has definitely shown up in a few decks, like the Neoform combo decks in Modern