Spike Pillar in New Super Mario Bros. Wii.
Spike Pillars are black, spiked pillars that first appear in Super Mario World. If Mario gets hit by them, it will cause a lose of life. But in later games they will just injure Mario if he has a power-up before causing an instant life loss.
They would be all vertical in Super Mario World, but some will be horizontal in New Super Mario Bros. and New Super Mario Bros. Wii. New Super Mario Bros. Wii would have larger spike pillars in World 6-Tower and World 7-Castle. They would also appear in Donkey Kong Country Returns in Jagged Jewels level.
They would return in the Nintendo 3DS game, Super Mario 3D Land. They will take on the appearance they did in New Super Mario Bros. Wii and this is their first appearance in a 3D Mario game. Spike Pillars would not only appear in the Castle levels, but they would also appear on the Airship levels.
Spike Pillars would appear in New Super Mario Bros. 2 in Castle and Fortress levels.