Boon of the Spirit Realm 
Enchantment
Constellation — Whenever this enchantment or another enchantment you control enters, put a blessing counter on this enchantment. Creatures you control get +1/+1 for each blessing counter on this enchantment.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL