Torture Chamber

At the beginning of your upkeep, put a pain counter on this artifact. At the beginning of your end step, this artifact deals damage to you equal to the number of pain counters on it. {1}, {T}, Remove all pain counters from this artifact: It deals damage to target creature equal to the number of pain counters removed

this way.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6obd7d7pkdpb1hzkr138l3.