Boon of the Spirit Realm

精霊界の加護 (Boon of the Spirit Realm) (ja)

Enchantment (CMC 5)
Constellation -- Whenever Boon of the Spirit Realm or another enchantment enters the battlefield under your control, put a blessing counter on Boon of the Spirit Realm.
Creatures you control get +1/+1 for each blessing counter on Boon of the Spirit Realm.