Should be "Lava Elemental deals 1 damage" the numerical form is used for damage, life loss, stat modifiers, and life gain.Also I created a blog like you suggested, here's the link. Any advice for maintaining and updating is appreciated.http://bobscards.blogspot.com/
I think you could also up it to 2 damage to everything since it ends up killing itself (still twice the cost of a pyroclasm, and this has to wait a turn and dies to removal).
Good call on both fronts. Thanks for giving feedback, guys.