At the beginning of your upkeep, put a pain counter on Torture Chamber. At the beginning of your end step, Torture Chamber deals damage to you equal to the number of pain counters on it. {1}, {T}, Remove all pain counters from Torture Chamber: It deals damage to target creature equal to the number of pain counters removed this way.
![Torture Chamber [Tempest]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/21834571-90bf-5eab-a4c2-2c97bfa4d817_441395f8-5089-4ac6-b8dd-145d2f40ab51.jpg?v=1698573873&width=1445)