Blaaz

Blaaz is a Wizrobe-like boss that appears in The Legend of Zelda: Phantom Hourglass. When the battle starts, he splits into 3 enemies, all of which are impervious to Link's sword. To attack him, you need to draw a path with your Boomerang that hits all of the enemies in the right order. Starting at the one with 1 spike at the minimap ending by the enemy with 3 spikes. Then, the boomerang will carry the enemies, until all three collide with each other. And the "Mini Blaazes" will merge, and turn into the larger form. Then, you can attack but BE CAREFUL: as his name suggests, he can control fire, and even make large flaming rocks hurdle down at you. Repeat this process, and some Sand of Hours, a Heart Container, and the fairy of power, Leaf will be yours.