gistfile1.txt

		zone_rules.push({
			handles: ANY_SINGLETON,
			validate: (zone) => {
				if (def.countZone(zone) > 0) {
					let commanderColorIdentity = {};
					for (let card of zone) {
						if (card.colorIdentity) {
							for (let color of card.colorIdentity) {
								commanderColorIdentity[color] = true;
							}
						}
					}

					if (deck.main) {
						CARD: for (let card of deck.main) {
							if (card.colorIdentity) {
								for (let color of card.colorIdentity) {
									if (!commanderColorIdentity[color]) {
										violations.push({ card: card.name, message: def.ERR_COLOR_IDENTITY_SINGLETON, zone: "main" });
										continue CARD;
									}
								}
							}
						}
					}
				}
			}
		});