Noxious Gearhulk [Kaladesh Inventions] Halfling Horror Sacrifice a creature: Target creature

Sacrifice a creature: Target creature gets -1/-1 until end of turn

master wizard

Set: The Brothers' War Retro Artifacts Type: Artifact Creature — Phyrexian Horror Rarity: Rare Cost: {5} Psychosis Crawler's power and toughness are each equal to the number of cards in your hand

who—or what—is the signal for

Defending player guesses whether that card's mana value is greater than the number of artifacts you control

Noxious Gearhulk [Kaladesh Inventions] Halfling Horror Sacrifice a creature: Target creatureSet: Kaladesh Inventions Type: Artifact Creature Construct Rarity: Mythic Cost: {4}{B}{B} Menace When Noxious Gearhulk enters the battlefield, you may destroy another target creature. If a creature is destroyed this way, you gain life equal to its toughness.