To shroud yourself in enemy-damaging steam, blend Ice with a Burn power-up so you'll quickly freeze and thaw yourself.”
— Description • Nintendo Power
Melting Ice Block is a combination ability in Kirby 64: The Crystal Shards. It is made by combining the Burning and Ice abilities. Kirby freezes himself into an ice cube, then quickly melts himself in a heat burst. The ice below can defeat enemies from above while the steam coming off the top can defeat enemies at close range. Kirby cannot move while he is in the ice cube, unless it was while he was jumping.
The range of the attack is very short, and isn't recommended for fights against bosses or mid-bosses alike, which makes it considered by fans to be the most useless ability in the game.
Freeze & Melt
Kirby becomes a block of ice quickly, then melts himself. The steam fries enemies.
Melting Ice Block and Refrigerator Kirby are the only Ice combinations that do not freeze enemies.
Kirby turns into a burning ice cube that can slide on the surface.”
— Description • Official Strategy guide
Kirby becomes a giant ice cube that immediately melts and vaporizes.”