The learn-to-play decks are a clever way to teach players the rules by putting them right into a game
From most valuable to least valuable, these include: Valgavoth, Terror Eater Kaito, Bane of Nightmares The Wandering Rescuer Tyvar, the Pummeler Niko, Light of Hope Among the cards in Duskmourn , there are 13 of them that are going for over $70: all 10 of the fracture foils, along with textured foil versions of Valgavoth, Terror Eater
This card type is still around in Modern and Legacy but has been renamed to kindred and rarely shows up, since R&D has stated it often doesnt work the way WotC intended
If Power Capsule Red is in your GY, then you can Fusion Summon a Level 4 LIGHT Machine monster with 800 DEF by sending monsters from your hand or field to the GY as material
So if you're playing a one-for-one game, where they play a creature, and you make them sacrifice it, eventually you're just going to have numerous copies of Chainer's Edict in the graveyard waiting to do it all again