User:Sonic The Hedgehog/Mario's Adventure/Mario vs. Kamek, Lendy O Koopa and Horton Koopa Jr.

Tamek zaps a brick block above you, hoping to turn it into a Thwomp, however it turns into a Mega Mushroom so you can smash 'em all down.

After smashing Tamek, Lendy and Horton, you smash through the doors to Dowser's Room.