I want to make a skill that prevents a player from taking damage if they fall a great distance.

I am guessing the game treats this as player hurt with world doing the attacking?

 but I dont want to prevent all world damage in case a player falls off a map or gets crushed or some other reason...

Am I correct that world would be the attacker? and is there any other way to make this skill or identify falling as the source of damage?

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