Five-headed Dragon

The Five-headed Dragon is a boss from Final Fantasy XIV: A Realm Reborn. He is the second boss of the World of Darkness, and is loosely based on Two Headed Dragon from Final Fantasy III.

Strategy
The five-headed dragon uses multiple elemental attacks in its arsenal - fire, ice, lightning, poison, and light. While the main tank should be the only one in range of its breath attacks, the dragon has other abilities to strike the alliance.

An ice attack may rain at spots. The initial attack deals damage inflicts Heavy, but shortly thereafter a white swirl indicates the floor will begin to ice over. Any player caught in it will become Frozen until it thaws out.

Poisonous Slimes may show up, leaving green puddles. These slimes must be eliminated before they inflict Silence on the whole raid. All players nearby a slain slime will gain a poison resistance buff.

After some time has elapsed, the dragon will use its ultimate attack: Discordance. While it is charging, all of its heads can be individually targeted. Each time a head is broken, the spell is reset. Once all heads break, Discordance will be quickly cast at minimum power, dealing minor damage to entire alliance.