Hierarchy of the Underworld

{| border="1" cellspacing="0" width="100%" ! valign="center" style="background:#800000; color:#FFFF00" colspan="4" | Introduction
 * colspan="4" |
 * Focus on FIRE-Fiends, DARK-Pyros, and FIRE/DARK monsters.
 * Mild support for older archtypes.
 * Cover Card is "Inferno Fiend of Sinful Flames".
 * Cover Card is "Inferno Fiend of Sinful Flames".

{| align="center" class="sortable" border="1" cellpadding="3" width="100%" style="border-collapse:collapse" ! valign="center" | Set Number || Card Name || Rarity || Category
 * HAUW-EN000
 * Inferno Fiend of Sinful Flames
 * Secret Rare
 * Effect Monster
 * HAUW-EN001
 * 
 * Normal Monster
 * HAUW-EN002
 * 
 * Normal Monster
 * HAUW-EN003
 * 
 * Tuner Monster
 * HAUW-EN004
 * 
 * TunerMonster
 * HAUW-EN005
 * 
 * Effect Monster
 * HAUW-EN006
 * 
 * Effect Monster
 * HAUW-EN007
 * 
 * Effect Monster
 * HAUW-EN008
 * 
 * Effect Monster
 * HAUW-EN009
 * 
 * Effect Monster
 * HAUW-EN010
 * 
 * Effect Monster
 * HAUW-EN011
 * 
 * Effect Monster
 * HAUW-EN012
 * 
 * Effect Monster
 * HAUW-EN013
 * 
 * Effect Monster
 * HAUW-EN014
 * 
 * Effect Monster
 * HAUW-EN015
 * 
 * Effect Monster
 * HAUW-EN016
 * 
 * Effect Monster
 * HAUW-EN017
 * 
 * Effect Monster
 * HAUW-EN018
 * 
 * Effect Monster
 * HAUW-EN019
 * 
 * Effect Monster
 * HAUW-EN020
 * 
 * Effect Monster
 * HAUW-EN021
 * 
 * Effect Monster
 * HAUW-EN022
 * 
 * Effect Monster
 * HAUW-EN023
 * 
 * Effect Monster
 * HAUW-EN024
 * 
 * Effect Monster
 * HAUW-EN025
 * 
 * Effect Monster
 * HAUW-EN026
 * 
 * Effect Monster
 * HAUW-EN027
 * 
 * Effect Monster
 * HAUW-EN028
 * 
 * Fusion Monster
 * HAUW-EN029
 * 
 * Synchro Monster
 * HAUW-EN030
 * 
 * Synchro Monster
 * HAUW-EN031
 * 
 * Spirit Monster
 * HAUW-EN032
 * 
 * Spirit Monster
 * HAUW-EN033
 * 
 * Spirit Monster
 * HAUW-EN034
 * 
 * Spirit Monster
 * HAUW-EN035
 * 
 * Spirit Monster
 * HAUW-EN036
 * 
 * Spell Card
 * HAUW-EN037
 * 
 * Spell Card
 * HAUW-EN038
 * 
 * Spell Card
 * HAUW-EN039
 * 
 * Spell Card
 * HAUW-EN040
 * 
 * Spell Card
 * HAUW-EN041
 * 
 * Spell Card
 * HAUW-EN042
 * 
 * Spell Card
 * HAUW-EN043
 * 
 * Spell Card
 * HAUW-EN044
 * 
 * Spell Card
 * HAUW-EN045
 * 
 * Spell Card
 * HAUW-EN046
 * 
 * Spell Card
 * HAUW-EN047
 * 
 * Spell Card
 * HAUW-EN048
 * 
 * Spell Card
 * HAUW-EN049
 * 
 * Trap Card
 * HAUW-EN050
 * 
 * Trap Card
 * HAUW-EN051
 * 
 * Trap Card
 * HAUW-EN052
 * 
 * Trap Card
 * HAUW-EN053
 * 
 * Secret Rare
 * HAUW-EN054
 * 
 * Secret Rare
 * HAUW-EN055
 * 
 * Secret Rare
 * HAUW-EN056
 * 
 * Secret Rare
 * HAUW-EN057
 * 
 * Secret Rare
 * HAUW-EN058
 * 
 * Secret Rare
 * HAUW-EN059
 * 
 * Secret Rare
 * HAUW-EN060
 * 
 * Secret Rare
 * Spell Card
 * HAUW-EN037
 * 
 * Spell Card
 * HAUW-EN038
 * 
 * Spell Card
 * HAUW-EN039
 * 
 * Spell Card
 * HAUW-EN040
 * 
 * Spell Card
 * HAUW-EN041
 * 
 * Spell Card
 * HAUW-EN042
 * 
 * Spell Card
 * HAUW-EN043
 * 
 * Spell Card
 * HAUW-EN044
 * 
 * Spell Card
 * HAUW-EN045
 * 
 * Spell Card
 * HAUW-EN046
 * 
 * Spell Card
 * HAUW-EN047
 * 
 * Spell Card
 * HAUW-EN048
 * 
 * Spell Card
 * HAUW-EN049
 * 
 * Trap Card
 * HAUW-EN050
 * 
 * Trap Card
 * HAUW-EN051
 * 
 * Trap Card
 * HAUW-EN052
 * 
 * Trap Card
 * HAUW-EN053
 * 
 * Secret Rare
 * HAUW-EN054
 * 
 * Secret Rare
 * HAUW-EN055
 * 
 * Secret Rare
 * HAUW-EN056
 * 
 * Secret Rare
 * HAUW-EN057
 * 
 * Secret Rare
 * HAUW-EN058
 * 
 * Secret Rare
 * HAUW-EN059
 * 
 * Secret Rare
 * HAUW-EN060
 * 
 * Secret Rare
 * 
 * Trap Card
 * HAUW-EN052
 * 
 * Trap Card
 * HAUW-EN053
 * 
 * Secret Rare
 * HAUW-EN054
 * 
 * Secret Rare
 * HAUW-EN055
 * 
 * Secret Rare
 * HAUW-EN056
 * 
 * Secret Rare
 * HAUW-EN057
 * 
 * Secret Rare
 * HAUW-EN058
 * 
 * Secret Rare
 * HAUW-EN059
 * 
 * Secret Rare
 * HAUW-EN060
 * 
 * Secret Rare
 * HAUW-EN057
 * 
 * Secret Rare
 * HAUW-EN058
 * 
 * Secret Rare
 * HAUW-EN059
 * 
 * Secret Rare
 * HAUW-EN060
 * 
 * Secret Rare
 * Secret Rare
 * HAUW-EN060
 * 
 * Secret Rare
 * 
 * Secret Rare