They are like 4 or 5 i think, Nomura explained in a Ultimania, dont remmeber wich, XD, but i agree, we couldnt play with them using the d-link cause they doesnt know yet how to take a sword, so i wont have many hopes there.
What does knowing how to use a sword have to do with becoming a D-link? TAV just borrow power through friendship or whatever and sparkle all over the field.