Heosvarog the Mechanical Dawn

2 LIGHT Machine monsters
If this card is Fusion Summoned: You can activate this effect; during the Standby Phase of the next turn, add 1 card from your GY to your hand with an effect that Fusion Summons. When your opponent activates a Spell/Trap Card or effect (Quick Effect): You can banish 1 face-up LIGHT Machine monster you control OR 2 LIGHT Machine monsters from your GY; negate the activation. You can only use each effect of "Heosvarog the Mechanical Dawn" once per turn.