Lesser Diamond Spellstone is a 7 Mana Cost Rare Priest Spell card from the Kobolds and Catacombs set!
Resurrect 2 different friendly minions. (Cast 4 spells to upgrade.)
Flavor TextA diamond, white, this stone the eighth
A precious jewel for those of faith
A whispered prayer restores the lost
But none among them know the cost.
Lesser Diamond Spellstone Additional Information
The Priest Diamond Spellstone was originally labeled as an Epic, but Mike Donais confirmed that all Spellstones are Rare:
They are all rares actually. Maybe there was an out of date one if you see it as epic. – Source