Thumbscrews
Mana cost
Mana value2TypeArtifact
Color identity
Colorless
RarityRare
SetTempest (TMP)
ArtistCharles Gillespie
Price€0.46 · $0.31
Thumbscrews 
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.
"We will start small, I think." —Volrath
Legality
CommanderLegalStandardNot legalPioneerNot legalModernNot legalLegacyLegalVintageLegalPauperNot legalBrawlNot legalOathbreakerLegalHistoricNot legalTimelessNot legalPenny DreadfulLegal
Rulings
2004-10-04
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.