The code currently boosts only by 1 level at 31 magic instead of 2. On the wiki page there are three replay sources listed with 33, 59 and 99 magic levels.When consumed, it will temporarily raise the player's Magic level by 2 (if under level 50) or 3 (if 50 or over)
A small but important thing, as it has direct effects on low level Dragon slayer builds eng101