Tail Bullet Bill
From the Super Mario Wiki
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As with most Bullet Bills, they are fired from Bill Blasters, and fly in the direction they are fired from; unlike normal Bullet Bills, they will briefly slow and do a spin attack with their tails after traveling some distance. After defeating a Tail Bullet Bill, Mario sometimes can obtain a Super Leaf (Statue Leaves in Special World levels).
Super Mario 3D Land
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