Since I picked up a large lot of these in a box with other non-sports cards, I figured I'd try to finish the 'set' of the Marvel Legends Showdown cards that were packaged with Action Figures. Yeah, good luck with that. In any case, you can check out the Marvel_Legends_Showdown wiki for details on these cards.
The following are all cards I NEED, unless otherwise noted.
Panel Cards
P-05 Base of Operation
P-09 Burning Mad
P-15 Earthquake!
P-18 Graveyard
P-28 Outnumbered
P-33 Super Punch
P-35 Victory Stance
P-52 Nerve Center
P-55 Phoenix Rising
P-59 Sabotage
P-67 The Maelstrom
P-73 and up
Beast
BST-06 True Blue Friend
Captain America
CAP-06 Tactics
Colossus
COL-05 Self-Sacrifice
Cyclops
CYC-01 Defensive Blast
CYC-02 Optic Blast
CYC-03 Surprise Attack
CYC-04 Leadership
CYC-05 Overload
CYC-06 Revenge
Daredevil
DAD-01 Baton Strike
DAD-02 Heightened Senses
DAD-03 Sonar
DAD-04 Amazing Agility
DAD-05 Man Without Fear
DAD-06 Swing Line
DAD-07 Blind Luck
Doc Ock
DOK-06 Idle Hands
Elektra
ELK-01 Crossed Blades
ELK-02 Double Sai Strike
ELK-03 Waiting in Ambush
ELK-04 Concentration
ELK-05 Mystical Training
ELK-06 Group Tactics
ELK-08 Counterstrike
Ghost Rider
GHR-01 Chain Attack
GHR-02 Relentless Assault
GHR-03 Revenge
GHR-06 Vengeance
GHR-07 Burning Mad
GHR-08 Road Warrior
GHR-09 Spirit of Vengeance
GHR-10 (Unconfirmed)
Green Goblin
GRG-04 Hostile Takeover
GRG-05 Inner Struggle
GRG-06 Paranoia
Human Torch
HMT-06 and up
Invisible Woman
IVW-01 Force Bubble
IVW-02 Flight
IVW-03 Enraged
IVW-04 Stealth Strike
IVW-05 Force Field
IVW-06 Invisibility
IVW-07 Shockwave
IVW-08 Psionic Blast
Iron Man
IRM-06 Wide Beam
Juggernaut
JUG-04 Appetite for Destruction
JUG-05 Steamroller
JUG-06 Unmasked
JUG-08 Reckless Charge
Mr. Fantastic
MRF-05 Long-Range Grab
Namor
NAM-04 (Unconfirmed)
NAM-05 (Unconfirmed)
NAM-06 (Unconfirmed)
Punisher
PUN-04 Cover Fire
PUN-06 Fully Loaded
Spider-Man
SPM-07 Sticky Situation
SPM-08 Altered Genetics
SPM-09 Spider Senses
SPM-10 Wall Crawling
Thing - COMPLETE! (THG01-06)
Thor
THR-01 Divine Protector
THR-02 Hammer Time
THR-03 Mjolnir
THR-04 Flight
THR-05 God of Thunder
THR-06 Retrieve
Venom
VNM-01 Keen Senses
VNM-02 Rage
VNM-03 Web Slinging
VNM-04 Fear
VNM-05 The Symbiote
VNM-06 Tongue Lashing
Wolverine
WLV-04 Berserker Rage
WLV-05 Deep Wound
WLV-06 Nasty Surprise
WLV-12 (Unconfirmed)
The following are all cards I NEED, unless otherwise noted.
Panel Cards
P-05 Base of Operation
P-09 Burning Mad
P-15 Earthquake!
P-18 Graveyard
P-28 Outnumbered
P-33 Super Punch
P-35 Victory Stance
P-52 Nerve Center
P-55 Phoenix Rising
P-59 Sabotage
P-67 The Maelstrom
P-73 and up
Beast
BST-06 True Blue Friend
Captain America
CAP-06 Tactics
Colossus
COL-05 Self-Sacrifice
Cyclops
CYC-01 Defensive Blast
CYC-02 Optic Blast
CYC-03 Surprise Attack
CYC-04 Leadership
CYC-05 Overload
CYC-06 Revenge
Daredevil
DAD-01 Baton Strike
DAD-02 Heightened Senses
DAD-03 Sonar
DAD-04 Amazing Agility
DAD-05 Man Without Fear
DAD-06 Swing Line
DAD-07 Blind Luck
Doc Ock
DOK-06 Idle Hands
Elektra
ELK-01 Crossed Blades
ELK-02 Double Sai Strike
ELK-03 Waiting in Ambush
ELK-04 Concentration
ELK-05 Mystical Training
ELK-06 Group Tactics
ELK-08 Counterstrike
Ghost Rider
GHR-01 Chain Attack
GHR-02 Relentless Assault
GHR-03 Revenge
GHR-06 Vengeance
GHR-07 Burning Mad
GHR-08 Road Warrior
GHR-09 Spirit of Vengeance
GHR-10 (Unconfirmed)
Green Goblin
GRG-04 Hostile Takeover
GRG-05 Inner Struggle
GRG-06 Paranoia
Human Torch
HMT-06 and up
Invisible Woman
IVW-01 Force Bubble
IVW-02 Flight
IVW-03 Enraged
IVW-04 Stealth Strike
IVW-05 Force Field
IVW-06 Invisibility
IVW-07 Shockwave
IVW-08 Psionic Blast
Iron Man
IRM-06 Wide Beam
Juggernaut
JUG-04 Appetite for Destruction
JUG-05 Steamroller
JUG-06 Unmasked
JUG-08 Reckless Charge
Mr. Fantastic
MRF-05 Long-Range Grab
Namor
NAM-04 (Unconfirmed)
NAM-05 (Unconfirmed)
NAM-06 (Unconfirmed)
Punisher
PUN-04 Cover Fire
PUN-06 Fully Loaded
Spider-Man
SPM-07 Sticky Situation
SPM-08 Altered Genetics
SPM-09 Spider Senses
SPM-10 Wall Crawling
Thing - COMPLETE! (THG01-06)
Thor
THR-01 Divine Protector
THR-02 Hammer Time
THR-03 Mjolnir
THR-04 Flight
THR-05 God of Thunder
THR-06 Retrieve
Venom
VNM-01 Keen Senses
VNM-02 Rage
VNM-03 Web Slinging
VNM-04 Fear
VNM-05 The Symbiote
VNM-06 Tongue Lashing
Wolverine
WLV-04 Berserker Rage
WLV-05 Deep Wound
WLV-06 Nasty Surprise
WLV-12 (Unconfirmed)