When your opponent gains Life Points: Target 1 monster your opponent controls; destroy that target.
How to Get
15,000 xGold R Jewel x35 Stone of Trap x40
Destroys 1 monster your opponent controls, when they gain LP.
Very situational card and challenging to use.
As this card is very situational, it will not see much popularity in competitive play.
These are some of the popular cards that player use to increase their LP, in which Aroma Garden is only applicable to Aromage Decks. Using Asleep at the Switch allows you to destroy 1 monster your opponent controls when they gain LP.
Draining Shield is a pretty popular card. Besides, Aromage is common enough that maybe someone might REALLY hate them. Geargia might be using Spell Absorbing Life too. Finally, you might be able to trigger this yourself, if you use many cards that give your opponent LP as a side effect.