Tier 2 source

Can pass item links as parameters in the order of raid progression: onyxia -> rag -> BWL bosses.

Tier 2 set pieces drop from Onyxia, Ragnaros and bosses in Blackwing Lair. The set pieces drop from the following bosses:
 * from
 * from
 * from
 * from
 * from
 * drop, &
 * drop
 * drop