If they have four or more cards, Id bet on Awoken Horror coming out and wreaking havoc immediately
With this particular adventure land, remember that playing lands on an adventure triggers exile-based payoffs like Prosper, Tome-Bound
Collectors got a nice little treat when Magic: The Gathering released Foundations, a set that is going to be in Standard for the next few years as a solid basis for players to build decks and collections around
I dont know what exactly these were, but it appears from the little information I have that there were a couple of European publishers, who released some kind of preconstructed decks and this was in those decks
That's not a terrible idea, actually - I could run Squallmonger in this pile
Healing Salve and Giant Growth are underpowered, seeing little play in any MTG format