Brainiac - Terror of Kandor

Does Brainiacs ability forcing an opponent to return a die and redraw trigger Magneto - Hellfires damage if your opponent has no villians on the table?
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Does Brainiacs ability forcing an opponent to return a die and redraw trigger Magneto -Hellfires damage if your opponent has no villians on the table?
While Brainiac is active, during your opponent’s Clear and Draw Step, you may make your opponent put one die from their draw back into the bag and redraw before they roll.
While Magneto is active, if your opponent has no Villains in the field, he takes 2 damage each time he draws one or more dice from his bag.
Clear and Draw Step
Move all energy dice from your Reserve Pool to your Used Pile.
Draw 4 dice from your bag; refill it from the Used Pile if necessary.