Lesser Ruby Spellstone is a 2 Mana Cost Rare Mage Spell card from the Kobolds and Catacombs set!
Add 1 random Mage spell to your hand. (Play 2 Elementals to upgrade.)
Flavor TextThe final stone undid its master
Spun into wards by nameless caster
Azari wailed a savage roar
Now sealed in nether, evermore.
Lesser Ruby Spellstone Additional Information
They specifically made this card a bit awkward for Exodia (Quest) Mage to use, says Mike Donais:
Right, we also wanted it to not be good in the existing quest mage deck since it runs very few elementals. If people want to run it in quest mage then they need to add a few elementals and change up the deck. – Source