Ido the Supreme Magical Force [CRMS-EN096] Secret Rare Champion Pack 8 or activate an Effect Monster's

or activate an Effect Monster's effect

when a card or effect is activated that includes any of these effects: You can discard this card

or Summoned monster

when a Special Summoned monster activates its effect while you have a "Shaddoll" card in your hand: You can negate the activation

If it was a Trap Card

Ido the Supreme Magical Force [CRMS-EN096] Secret Rare Champion Pack 8 or activate an Effect Monster'sSet: Crimson Crisis Card type: Effect Monster Rarity: Secret Rare Attack: 2200 Defense: 800 You cannot Summon monsters. You can only control 1 "Ido the Supreme Magical Force". If this card is destroyed by a card effect and sent to the Graveyard, Special Summon it from your Graveyard during the next turn's Standby Phase and destroy all other monsters you control.