Mages' Contest [Invasion] Emblem Negate an activation of a

Negate an activation of a Spell/Trap Card / Normal Summon / Flip Summon / Special Summon and destroy the Spell Card

You can only use each effect of "Joker's Knight" once per turn

Set: Secrets of Eternity Card type: Ritual/Effect Monster Rarity: Ultimate Rare Attack: 2500 Defense: 1700 You can Ritual Summon this card with any "Nekroz" Ritual Spell Card

Set: XY: Base Set Type: Grass Rarity: Ultra Rare Retreat cost: Colorless

Mages' Contest [Invasion] Emblem Negate an activation of aSet: Invasion Type: Instant Rarity: Rare Cost: {1}{R}{R} You and target spell's controller bid life. You start the bidding with a bid of 1. In turn order, each player may top the high bid. The bidding ends if the high bid stands. The high bidder loses life equal to the high bid. If you win the bidding, counter that spell.