Caltrop (noun) - a ball with projecting spikes so disposed that when the ball is on the ground one of them always points upward: used to obstruct the passage of cavalry, armored vehicles, etc.

Again, do not use these to cause harm.

Classic Ninja (my version)

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Emergency Room Bloom

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Whipped Scream

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Not a Fan

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Wheely Bad

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Gears of Floor

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Flack Lotus

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Mordor

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Sun I've got bad news

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Umbrella Stand