'''Effect Monsters''' (Japanese: {{Ruby|効|こう}}{{Ruby|果|か}}モンスター ''Kōka Monsutā'') are [[Monster Cards]] with an orange color border. Unlike [[Non-Effect Monster]] (particularly [[Normal Monsters]]), these monsters have an effect (''Special Ability'' in the English anime), which is demonstrated clearly by the fact that they have the [[Type]] 'Effect' beside their regular sub-type ([[Reptile]], [[Spellcaster]], etc.). Effects vary greatly, and are classed in five different types: