Magic can be highly profitable if you train at the right locations. Hill Giants are excellent for both Members and F2P players because they drop big bones and limpwurt roots. As you gain higher levels, you can access more difficult creatures, which drop better loot. However, one of the best sources of GP is by bossing because you can get rare items valued 100+ million GP. Alternatively, skillers can use Magic to gain profits. This is mainly done with the high alchemy spells, which convert items to GP.