If your effect can be activated at any point, during either player's turn, you say: "When a Spell/Trap Card is activated that targets 1 monster you control (Quick Effect): You can negate the activation, and if you do, destroy that card." If it only can be done at a certain time, yet still have it be a Quick Effect, say something like : "During your opponent's Main Phase (Quick Effect): You can send this card from your hand to the GY, then target 1 card in your opponent's GY
The next series, "Yu-Gi-Oh
Battle Carnival 2011 Promos Sandile 113/BW-P and Krokorok 114/BW-P are holographic promos from Battle Carnival 2011
Legendary Creature - Wizard Goblin Commander (CTRL to add secondary) Burn Smoldering Egg Defender Whenever you cast an instant or sorcery spell, put a number of ember counters on this creature equal to the amount of mana spent to cast that spell
All of that said, Propagandas best finish this weekend was in the offbeat Izzet Affinity deck that I piloted to a top 16 of the Canadian Regional Championship