The Obstacle Wheel (お邪魔攻撃, ojyama kougeki) is a gameplay feature introduced in Dynasty Warriors DS: Fighter's Battle. By picking up coins dropped or scattered throughout the battlefield, players may obtain one random obstacle effect at a time by pressing Y.
Five coins are the minimal requirement to activate the roulette while nine is the maximum any character can hold. Obstacle effects range from hindering the opponent's movements or strengthening the player's whole army. Note that the type of obstacle effect available depends on what kind of map and cards are used. Likewise, the opponent is also capable of using this feature to their advantage especially in higher difficulty settings.