More information on these methods on the official website, in multiple languages: How do I claim Twitch Drops for Pokmon TCG Pocket
Conversely, the triggered ability created by the chapter III ability will trigger whenever any Elf you control attacks that turn, even if you didn't control that Elf as the chapter III ability resolved
The goal of the format is simple
Card Sale price$3.00 Cynet Backdoor SDCL-EN023 Yu-Gi-Oh
For rare cards, you may want premium sleeves, which have a thicker material than the standard
There are other ways to deal with monsters in terms of cards that might despawn them, stop them coming into existence in the first place, and of course the occasional scenario specific methods like those found in The House Always Wins from the Dunwich Legacy core