Bomb Block (Wario Land: Shake It!)
From the Super Mario Wiki
A Bomb Block is a block that also serves as a platform in Wario Land: Shake It!. They have a certain number on them, and when Wario walks on them, the number counts down before exploding. They can explode when Wario shakes the ground. Bomb Blocks usually appear in desert levels and can sometimes hold obstacles back, such as huge boulders. Bomb Blocks also damage enemies with the blast of the explosion.