Until end of turn, your hero gains "Whenever you draw a card this action phase, deal 1 arcane damage to any target". (Brainstorm itself does not have an arcane damage effect. It is not modified by arcane damage modifiers.)
Near Mint - $1.600
Near Mint Spanish - $1.600
Lightly Played - $1.300
Lightly Played Spanish - $1.300
Moderately Played - $1.100
Moderately Played Spanish - $1.100
Heavily Played - $1.000
Heavily Played Spanish - $1.000
Damaged - $800
Damaged Spanish - $800