adrian
1
Roughly translated, 火燒功德林 is the “Fire that burns the forest of merits”.
What fire can do this?
瞋心
That of aversion, ill will or simply put anger - one of the three poisons.
Why is the impact so great?
如得法師 gives his discourse
remember to myself, it is just not worth it to get angry!
Jereme
2
At 3:37, 如得法师 mentioned that wrong view has the same effect, in which there is absolutely no foundation for your merits to exist or accumulated. 
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