This card has already done its job if you get even one land out of it, but its very likely that Deep Gnome Terramancer will stick around and net you multiple lands if there are green decks or color-intensive decks that might run fetchlands at the table
Just keep summoning monsters, then tribute the monsters to inflict 400 points of damage to your opponent
Although the price for summoning does seem quite steep, the cards stats arent the only things making this a worthwhile summon
For collectors and investors who love to dig into unique mechanics with big upside, Bidoof (Peelable Ditto) is a card to watch closely
Im running Wheel of Fortune, Memory Jar, Reforge the Soul, and Magus of the Wheel as my main wheels, with some additional discard outlets like Chandra, Flamecaller, Nahiri, the Harbinger, Geier Reach Sanitarium, and Mask of Memory