If an Omen spell is countered or an effect causes it to otherwise leave the stack, it won't be shuffled into its owner's library
To summarize
Differently from Lands, though, you can move your Characters onto one of your Locations to trigger certain in-game effects and bonuses
The Volcanic Heat attack provides a nice 130 damage for three Energy, meaning it can take down most regular Pokmon in one attack, but it has the nasty drawback of not being able to attack on the following turn
Although few details about battle cards are known, WotC disclosed that battle cards are double-faced and appear in every March of the Machine Draft and Set Boosters
A great realtor could sell you on the Forgotten Cellar but on the other hand, creature tutors and gravediggers like Ramunap Excavator which suits more budgets, so weigh your pros and cons and send your down payment which should be less than $10