Thumbscrews

{2} · Artifact

At the beginning of your upkeep, if you have five or more cards in hand, this artifact deals 1 damage to target opponent or planeswalker.

Motor: se resuelve a mano

Rulings (1)

It checks the number of cards in your hand at the beginning of upkeep, and if you have 4 or fewer cards in hand it will not trigger. It checks again when it resolves and will not deal damage unless you still have 5 or more cards in hand.
Wizards of the Coast · 2004-10-04