Duel Capsule

From the Super Mario Wiki

The Duel Capsule made its only appearance in Mario Party 5, where it and could be thrown to a space on the board, or used on the player for ten coins. Whoever landed on a space containing that capsule started a duel with another player for coins or Stars.

Orbs and Capsules from the Mario Party series
Capsules in Mario Party 5 Bob-omb Capsule Bone Capsule Bowser Capsule Bubble Capsule Bullet Bill Capsule Chain Chomp Capsule Chance Capsule Coin Block Capsule Cursed Mushroom Capsule Duel Capsule Wiggler Capsule Goomba Capsule Hammer Bro. Capsule Kamek Capsule Klepto Capsule Koopa Bank Capsule Lakitu Capsule Magikoopa Capsule Miracle Capsule Mr. Blizzard Capsule Mushroom Capsule Paratroopa Capsule Piranha Plant Capsule Podoboo Capsule Spiny Capsule Super Mushroom Capsule Tweester Capsule Ukiki Capsule Warp Pipe Capsule
Orbs in Mario Party 6 Bob-omb Orb Boo Away Orb Bullet Bill Orb Cursed Mushroom Orb Flutter Orb Goomba Orb Hammer Bro. Orb Kamek Orb Klepto Orb Metal Mushroom Orb Mr. Blizzard Orb Mushroom Orb Paratroopa Orb Piranha Plant Orb Podoboo Orb Sluggish 'Shroom Orb Snack Orb Spiny Orb Super 'Shroom Orb Thwomp Orb Toady Orb Tweester Orb Warp Pipe Orb Zap Orb
Orbs in Mario Party 7 Bandit Orb Bob-omb Orb Cannon Orb Egg Orb Fireball Orb Flower Orb Flutter Orb Hammer Bro. Orb Kamek Orb Koopa Kid Orb Lakitu Orb Magic Orb Metal Mushroom Orb Mr. Blizzard Orb Mushroom Orb Pink Boo Orb Piranha Plant Orb Slow 'Shroom Orb Snack Orb Spear Guy Orb Spiny Orb Super 'Shroom Orb Thwomp Orb Toady Orb Tweester Orb Vacuum Orb Warp Pipe Orb Zap Orb