At the time of the migration of nations there was only one place in the whole of Europe where the Celts could live in freedom: the British Isles or rather those parts of the British Isles that weren't under the command of the Romans.
Celtic nations had already discovered and settled throughout the entire continent at a time when the Roman empire was still a faraway dream and the Teutonic tribes still froze in Scandinavia. They still however had to make way for the foreign powers which invaded their lands, sometimes as part of a plan and sometimes not. After the Romans had first conquered the Gallic and then the Spanish Celtic nations, the fate of the one-time rulers of Europe seemed to be finally sealed.
It was only on the British Isles that some free Celtic nations could stand up for themselves. Knowing that they would never regain their old power, they waited for an opportunity to drag the Roman empire that had dealt them the deadly blow, together down with them to their downfall.

Magic Spells of the Druids A Celtic druid can master the following magic spells:< Sowing the Seeds of Discord Your druid can cause the opponents to clash internally so much that they can suffer a serious loss of morale. Magic point cost: Low Healing Your druid can replace the lost life points of your figures with this magic spell. Magic point cost: Medium Evil Eye The magic spell enables your druids to place a curse on your opponents' buildings and figures and to thus cause damage. Magic point cost: High Waking the Dead Your druid can reanimate dead figures using this magic spell. If it is a figure of an opposing tribe, it now automatically belongs to your tribe after it has been reanimated. Magic point cost: Maximum