I want something like this, but instead they 'slip' upon entry and that is the damage mechanic via weight. Also pokemon who have roost take some danage on the first time they roost and then they become immune again. However gravity doubles the damage. Snorlax better watch out! Ahahaha~
IDK, a Poison-type entry hazard called Oil Slick might fit this better. Just make the damage itself untyped; even a Steel-type shouldn't come out of a sudden fall unharmed.
sure, but make entry hazards only last for 5 turns
I wouldn't mind some limit on hazards, either time based, hit based, or more removal methods.
Also, what thoughts do people have on an entry healing move? "A soothing mist surrounds you." Allies are healed for 1/8 of their HP upon switching in. Doesn't have to be water based, but just a thought.