• Structure Deck 20: Lost Sanctuary is the twentieth Structure Deck to be released for the OCG, the 19th for the TCG.

• English Set Name: Structure Deck 20: Lost Sanctuary
• Japanese Set Name: ＳＴＲＵＣＴＵＲＥ ＤＥＣＫ -ロスト・サンクチュアリ
• OCG Set Prefix: SD20
• OCG Release Date: December 11, 2010
• Cover Card: Master Hyperion
• Features:
  • Based on the Fairy-Type Theme.
  • A Fairy-Type Deck orientated on utilizing the "Agents".
  • Includes 5 new cards and many reprints.
• Includes 40 cards:
  • 1 Ultra Rare
  • 2 Super Rares
  • 37 Commons
  • 1 Rulebook
  • 1 Playing Guide
  • 1 Duel Field

OCG Set Card Ratios:
Japanese

OCG Set Card Galleries:
Japanese

OCG Set Card Lists:
Japanese

• English Set Name: Structure Deck: Lost Sanctuary
• French Set Name:
• German Set Name:
• Italian Set Name:
• Spanish Set Name:
• TCG Set Prefix: SDLS
• North American Release Date: June 14, 2011
• French Release Date: June 9, 2011
• Cover Card: Master Hyperion
• Features:
  • Based on the Fairy-Type Theme.
  • A Fairy-Type Deck orientated on utilizing the "Agents".
  • Includes 5 new cards and many reprints.
• Includes 40 cards:
  • 1 Ultra Rare
  • 2 Super Rares
  • 37 Commons
  • 1 Rulebook
  • 1 Game Mat
  • 1 Dueling Guide

TCG Set Card Ratios:
TCG

TCG Card Galleries:
1st Edition
English - French - German - Italian - Spanish

Unlimited edition
English - French - German - Italian - Spanish

TCG Set Card Lists:
English - French - German - Italian - Spanish