
In so far as we know, the Twelve are mythical beings. They do not actually exist per se, and thus are ripe for Primal summoning.
However, consider the last fight of 3.0 :
Notice how usually the primals we have currently seen are worshiped by a beast tribe that is relatively few in number and that can get the aether crystals necessary by just raiding shipments of them.
We're talking about beings who, in the lore, have shaped the very essence of the continent. You'd need a lot of juice to bring 'em on over with all their godly power.
Primals are essentially belief + source of power. Technically, even creatures from the void could return as primals if, say, someone found a source of power and decided to believe enough in them. Diabolos returning as a primal fight anyone?
Now, the real interesting part about primals is the distinction between a primal and what the Warring Triad are if you read up on the lead up to the Bismarck/Ravana EX fights.
However, consider the last fight of 3.0 :
Notice how usually the primals we have currently seen are worshiped by a beast tribe that is relatively few in number and that can get the aether crystals necessary by just raiding shipments of them.
We're talking about beings who, in the lore, have shaped the very essence of the continent. You'd need a lot of juice to bring 'em on over with all their godly power.
Primals are essentially belief + source of power. Technically, even creatures from the void could return as primals if, say, someone found a source of power and decided to believe enough in them. Diabolos returning as a primal fight anyone?
Now, the real interesting part about primals is the distinction between a primal and what the Warring Triad are if you read up on the lead up to the Bismarck/Ravana EX fights.