If your worm needs to make a leap of faith from a high spot, flames will spare you fall damage, just like that haystack from Assassin's Creed.

Replay below!

This is trippy, looks like you're receiving both grave damage and fall damage lol.

The first one especially, with LG would do about 20 damage? Then you take like 11hp damage from 3 little bumps from napalm.

Same kind of with second one.

Though at the same time... I can sort of see it... Interesting.

Here is Replay #2. It proves that if a worm falls from the same height, it takes less damage when landing on flames (19 hp) compared to when falling planly on the ground (25 hp).