**What are the key security features commonly found in modern banknotes to prevent counterfeiting?
2. **How has the design and material composition of banknotes evolved over time, and what are the primary materials used in their production today?
Are there any official World of Warcraft memorabilia items that were released as limited editions, and how do they differ from regular merchandise?
What are some common ways that fans display or preserve their World of Warcraft memorabilia to maintain its condition and value?
How do community and fan events, such as BlizzCon, influence the availability and popularity of World of Warcraft merchandise and collectibles?
What are the primary types of cards in the Yu-Gi-Oh! trading card game, and how do they differ in terms of gameplay mechanics?
How do the effects of "Monster," "Spell," and "Trap" cards differ, and what strategies can be employed to maximize their effectiveness in a duel?
Can you explain the concept of "card rarity" in Yu-Gi-Oh! and how it affects card value and collectibility?
What are "XYZ" and "Synchro" summoning, and how do these advanced summoning techniques add complexity to the Yu-Gi-Oh! game?
How has the introduction of archetypes, like "Dragon," "Spellcaster," or "Warrior," influenced deck-building strategies and the overall metagame?
