As a curling stone, Kirby will slide in the direction he was facing when he transformed and he'll freeze all foes in his path.”
— Description • Nintendo Power (Volume #134)
Curling Stone is a combo abilityKirby gets by combining Stone with Ice, appearing in Kirby 64: The Crystal Shards. Kirby transforms into a curling stone, sliding around and bouncing off walls, as well as freezing any enemy he touches. Kirby will eventually slow down after he has slid a long distance.
In the trailer for Kirby Star Allies, Curling Stone is shown to have returned as part of a Team-Up Attack. The handle color depends on the player (Kirby's is pink, Player 2's is yellow, Player 3's is blue, Player 4's is green), and the stone is given a silvery granite color. It has a star engraved on each side, and Kirby's face no longer has a mouth, but still retains his rose-colored blush. In addition to freezing enemies, the ability now also leaves behind a trail of ice shards. Like Stone, it is shown to be primarily useful on slopes.
Curling Stone Transformation
Kirby becomes a curling stone and slides along the ground, freezing anything in his path, until B is pressed again. Kirby will slow down as he slides.
Kirby turns into a curling stone that can slide along surfaces.”
— Description • Official Strategy guide
Kirby takes the shape of a curling hammer, great for moving across large areas filled with enemies.”