Ive joked in the past about the ultimate of Jace, the Mind Sculptor is just Brainstorm, because an extra Brainstorm effect is usually enough to win the game
Not only does it attack each turn from an opponents side of the field, but it also has an ability that anyone other than its controller can activate
Overstatted for its cost, absurd upside in the right deck, 2-for-1 potential with no extra effort needed
This action also increases her power and toughness with a +1/+1 counter
The manual for the Mirage expansion even had an entry for "Loop, Continuous" in the index
If youre wondering why the Alliances team went to all this trouble for a random uncommon instead of just making it a 6/6 trample, its because this is a top-down design homage to Elric of Melnibone, one of the most influential pulp fantasy heroes of his day