Even if [[Maze of Ith]] could be a blast versus some matchups ([[Shu Yun, the Silent Tempest]], [[Arahbo, Roar of the World]], [[Karlov of the Ghost Council]], [[Rafiq of the Many]]...) I feel like more than half of the time I'd prefer to have a mana land and I find myself scrying, cycling it with loot effects or killing it on [[crop rotation]] in order to grab something else
The more deadly side is Exude Toxin, a sorcery that gives each non-Dragon -X/-X equal to the amount of mana you want to dump into it
A free Equip cost makes it easy to move this card where it is needed both before and after combat, and in combination with Leonin Shikari, effectively gives all your creatures Shroud
Im expecting Agathas Soul Cauldron to show up in a lot of decks, because its powerful and fun
Considering how good location cards are shaping out to be in Into the Inklands, Treasure Guardian, Protector of the Cave is well worth putting into your deck alongside them thanks to its amazing stats and cheap cost