Loyal Retainers (Invocation) [Amonkhet Invocations] San Diego Comic-Con 2014 you can negate the activation

you can negate the activation of 1 Spell Card and destroy the Spell Card by discarding 1 card from your hand

When Glistening Oil is put into a graveyard from the battlefield

Set: Ancient Guardians Card type: Effect Monster Rarity: Collector's Rare Attack: 2500 Defense: 2800 If this card is in your GY: You can Tribute 2 monsters

Set: Hidden Arsenal 6: Omega Xyz Card type: Xyz/Effect Monster Rarity: Secret Rare Attack: 1500 Defense: 1100 2 Level 2 monsters Once per turn: You can detach 1 Xyz Material from this card to target 1 face-up WIND monster you control

up to the number of "HERO" monsters you control

Loyal Retainers (Invocation) [Amonkhet Invocations] San Diego Comic-Con 2014 you can negate the activationSet: Amonkhet Invocations Type: Creature Human Advisor Rarity: Mythic Cost: {2}{W} Sacrifice Loyal Retainers: Return target legendary creature card from your graveyard to the battlefield. Activate this ability only during your turn, before attackers are declared.