Marvel Ultimate Villains is a special 40-card set that was given away free in the UK with tabloid newspapers The Daily Mirror / Sunday Mirror (England & Wales) and The Daily Record / Sunday Mail (Scotland).
The offer began on on Saturday 13th Februrary 2010 and featured four cards inside for ten days until Monday 22nd Feb.
A special 'tuck-box' was also made available to keep the cards in, supplied free at branches of W.H.Smith stores by handing in a cut-out token from inside the newspapers.
Some of the cards also have special 3D software encoded on the backs featuring teasers of the movie Iron Man 2.
The cards are fully compatible to play combined with 2008's Marvel Ultimate Heroes deck, and has variant versions of the Toad and Juggernaut cards included.
(In order of release)
Magneto, Sabretooth, Sandman, Rhino
Loki, Madame Hydra, Juggernaut, Enchantress
Kang, Toad, Thanos, Dark Phoenix
Dr Octopus, Bullseye, Electro, Modok
Carnage, Red Skull, Morlun, Kingpin
Red Hulk, Mystique, Mysterio, Blob
The Destroyer, The Leader, Sentinels, Crimson Dynamo
Kraven, Jigsaw, Typhoid Mary, Green Goblin
Ultron, Vulcan, Vulture, Galactus
Quicksilver, Abomination, Absorbing Man, Dr Doom