Welcome to Celt faction spotlight where we look at the barbaric warriors who gave. Rome the middle finger which was probably one of their own Legionaries and they believed in sacred ground and disturbing it will not be a good thing so let's have a look.
Their mechanic is two things the first is the previous mentioned. The sacred ground so over time or by doing something great you get an item which when place in. Your influence allows you to build a special structure which is entirely exclusive and the second things is when a you start of you are a single clan and with each advancement you invite another to join you and get all benefits that comes along.
(Sacred ground types.)
Burial mound when a. Celt or ally dies they wake up at home an treat it like a bad dream.
Fields of the plentiful this makes agriculture a lot easier.
Elemental shifting earth with the power of the elements you get not. Captain Planet but a pissed of elemental like from Max steel.
Warring tribes gives your soldiers various combat skills and abilities for how developed it is.
For the myth units you'll look for your self and see the wonders of Ireland and for regular units you'll have access to all but some tribes work better with others.
For the Titanic creature you have the Fomorians greatest warrior.