In-Play Zone
From Archon Arcana - The KeyForge Wiki
All cards currently in play exist in one in-play zone. Cards in play can interact with and be affected by other cards in play. When a card is added to the in-play zone, it “enters play,” and when it leaves the in-play zone, it “leaves play.”
Related Topics: Enters Play, Leaves Play, Out-of-Play Zones
—KeyForge Master Rulebook v17.4 September 2024