Content is now organized by game version and source

This link potentially matches multiple versions of "Ancient Blue Dragon":

• Ancient Blue Dragon (System Reference Document 5.2)

  CR 23 · Dragon (Gargantuan)

• Ancient Blue Dragon (System Reference Document 5.1)

  CR 23 · Dragon (Gargantuan)

• Ancient Blue Dragon (Monstrous Menagerie)

  CR 25 · Dragon (Gargantuan)

• Ancient Blue Dragon (Black Flag SRD)

  CR 20 · Dragon (Gargantuan)