Warcraft III: The Frozen Throne/Balancing of the Scales

Don't fight through the Naga base with Furion/Tyrande to get to Maiev initially. Instead, move south and use Furion's Force of Nature to break through the trees just southwest of Maiev's base to get your forces through easily. Then, use the combined power of Furion, Tyrande, and Maiev to destroy the satellite Naga base. It is recommended to wait for that Naga base to attack first so that their forces are depleted when you move to siege the base.