Axeman's potion

Axeman's potion can be made with Herblore level 40. The ingredients you'll need are maple roots and clean wergali. It can be bought for 1,200 gp at the Grand Exchange or bought from Woodcutter's Guild for only 1,000 gp. It will boost your Woodcutting level by 2 if under 40, 3 if between 41 and 69, 4 between 70 and 99. It was Michael, the guildmaster of Woodcutter's Guild, who discovered how to make the potion.