3 comps
LSD (Lock / Shaman / Druid)
A control-attrition comp that got stronger as TBC went on. Elemental Shaman utility + double Fear + Cyclone create relentless control while DoTs grind the enemy out. Wins the long game against almost anyone.
MLD (Mage / Lock / Druid)
A pure caster-control comp. Polymorph, Fear, and Cyclone layer into near-permanent lockdown while DoTs and Shatter combos kill. Dizzying to play and to play against — a control clinic when piloted well.
WLD (Warrior / Lock / Druid)
Warrior/Lock pressure married to Druid mobility and Cyclone. Constant Mortal Strike + DoT damage while the druid kites and locks the enemy healer out with Cyclone. Strong cleave with real staying power.