Horned Stoneseeker
Creature - Lizard
| Power/Toughness:
2 / 2
(CMC 2)
Menace
When Horned Stoneseeker enters the battlefield, create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")
When Horned Stoneseeker leaves the battlefield, sacrifice a Powerstone.