Killer Koopa!
When(if)you get that blue koopa shell,PUT IT ON! If you run with it(hold down the dash button while you are walking)you will eventually turn into a koopay shell that kills enemies on the spot.The only bad part is that you can't turn,unless you hit a wall and you can't kill dry bones for good I think,and that you aren't invincible to those metal balls with the pointy stud thingies on them.But other than that,this koopa shell has done wonders for me!
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