[LV1][LV2] Friend: 4/6/8 (When Attacks) You can reveal the top card of your deck. If it's a Cost 4/6/8 Spirit in family "Song Princess", you can summon it in exhausted state without paying the cost. Remaining cards are discarded.
[LV2] (Your Attack Step) "Rei-Ohba" Spirits revealed by this Spirit's "Friend" are treated as Cost 4.