Grand magic potion

The grand magic potion is a six-dose combination potion that can be made at level 77 Herblore after buying the recipe for 100,000 coins from Lady Meilyr (you do not need to find this recipe in Daemonheim). It is made by combining a super magic potion (4) and a magic potion (4) in a crystal flask, giving 155.7 experience.

A dose of grand magic boosts Magic by 14% of your Magic level, plus 2, rounded down. This makes it better than super magic potion, but worse than extreme magic.