Hard cause of dementia... I think it is caused by slivers... oh and I see some rats bites

Each opponent's maximum hand size is reduced by one.

Each opponent's maximum hand size is reduced by two.

All Slivers have ": Choose a card name. Target opponent reveals a card at random from their hand. If that card has the chosen name, that player discards it. Activate only during your turn."

Your opponents play with their hands revealed.