Cards I don't have (not all are listed, just the ones I'm particularly interested in)
Fellowship of the Ring set:
1R1 The One Ring, Isildur's Bane
1R13 Gimli, Son of Gloin
1R50 Legolas, Greenleaf
1R96 Boromir, Lord of Gondor
1R230 Ulaire Cantea, Lieutenant of Dol Guldur
1R236 Ulaire Toldea, Messenger of Morgul
1R284 Bilbo Baggins, Retired Adventurer
Mines of Moria set:
2R32 Flaming Brand
2R52 The Balrog, Flame of Udun
Realms of the Elf Lords set:
3R1 Book of Mazarbul
3R15 Forests of Lothlorien
3R17 Galadriel, Lady of the Golden Wood
3R23 Nenya
The Two Towers set:
4R1 The One Ring, Answer to All Riddles
4R48 Gimli, Lockbearer
4U63 Elven Brooch
4R73 Legolas, Dauntless Hunter
4R75 Lembas
4R100 Shadowfax
4R103 Treebeard, Earthborn
4C153 Grima, Son of Galmod
4R154 Grima, Wormtongue
4R166 The Palantir of Orthanc, Seventh Seeing-stone
4R267 Eomer, Third Marshal of Riddermark
4R269 Eothain, Scout of the Mark
4R271 Eowyn, Sister-daughter of Theoden
4C292 Theoden, Son of Thengel
4R301 Frodo, Courteous Halfling
4R311 Merry, Unquenchable Hobbit
4R313 Pippin, Just a Nuisance
Battle For Helms Deep set:
None needed.
Ents of Fangorn set:
6R30 Gandalf, Mithrandir
6R41 Master Broke His Promise
6R80 Southron Archer Legion
6R103 Gate Troll
6R106 Troll of Udun
6R109 Held