Where Tarkir: Dragonstorm felt very situated, Final Fantasy takes the breadth of its theme in stride
It represents the journey a creator takes from beginning to end, whether we are looking at the making of a piece of art or, in terms of Magic, building a Commander deck
That said, between ramps ubiquity in Commander, the fact that ramping one land for 2 mana has been good enough for many cards to see consistent play in the format for years, and the risk that Deep Gnome Terramancer will be a dead card is minimal at best, and Id call it a safe bet youll come out ahead far more often than not when playing this card
If you were asked to kill a threat or refrain from attacking a player for a turn or two, on the promise of a free Ancestral Recall, Im certain youd take it
If youre playing a bunch of the small, evasive creatures that blue is known for, curving into one of these on turn four will keep you flush with cards for turns to come