Rockstar Eidolon

Rockstar Eidolon enters the battlefield with X
1/1 groupie creature tokens under your control,
where X is equal to the amount of {x} mana
tapped this way.
All Groupies have '{t}: Add {2} to your mana
pool.'
Sacrifice 6 groupies: Put one wanna-be token
copy of Rockstar Eidolon onto the battlefield,
under your control. (They are not Legendary)