Yu-Gi-Oh, like most other TCGs, has a wide variety of rarities for cards that make them more sought after, and certainly more attractive for certain types of player, collector or both
Full Foil Change Foil cards in every set up until now have had a cold foil treatment only on the main image as well as the stat and rarity icons
You are allowed to read each mode in full
Whats Inside the Box The Fallout Commander Deck: Mutant Menace includes everything you need to start playing: 2 Traditional Foil Legendary Creature Cards Choose The Wise Mothman or The Master, Transcendent as your commander
The example here shows the set code SDY, identifying this card as being from the Starter Deck: Yugi set
There are a few fringe scenarios where you might want to intentionally cast a second legend after attacking with the first copy, just in case you need the blocker