Marksman Draught

Marksman Draught is type of magical potion that boosts a pirate's gun  damage.
 * Rank 1 - Increases Gun Damage by 10% for 3 minutes
 * Rank 2 - Increases Gun Damage by 20% for 4 minutes
 * Rank 3 - Increases Gun Damage by 30% for 5 minutes