diff --git a/interfaces.d.ts b/interfaces.d.ts
index ef265d1e6..c129b4720 100644
--- a/interfaces.d.ts
+++ b/interfaces.d.ts
@@ -224,3 +224,36 @@ export interface Card {
 	energyType?: 'Normal' | // https://www.tcgdex.net/database/ecard/ecard1/160
 	'Special' // https://www.tcgdex.net/database/ecard/ecard1/158
 }
+
+/**
+ * Filter for cards legality
+ */
+export interface Filter {
+	includes: {
+		/**
+		 * series to be included
+		 */
+		series: Array<string>
+		/**
+		 * Set to be included in the filter
+		 * ex: swsh1
+		 */
+		sets: Array<string>
+		/**
+		 * Filter by regulation Marks on the cards
+		 * ex: 'D'
+		 */
+		regulationMark: Array<string>
+	}
+	excludes: {
+		/**
+		 * sets to be excluded
+		 */
+		sets: Array<string>
+		/**
+		 * Global Ids of banned cards
+		 * ex: swsh1-1
+		 */
+		cards: Array<string>
+	}
+}
diff --git a/legals.ts b/legals.ts
new file mode 100644
index 000000000..2428e14a4
--- /dev/null
+++ b/legals.ts
@@ -0,0 +1,132 @@
+import { Filter } from './interfaces'
+
+/**
+ * File Explanation
+ *
+ * The main goal of this file is to update quickly the current list of authorized/banned cards in the standard and expanded formats
+ *
+ * For included cards/set/etc we are currently using the April post of each years (note: posts seems to be coming each April)
+ * - 2022: https://www.pokemon.com/us/pokemon-news/2022-pokemon-tcg-championship-series-season-format-rotation/
+ * - 2021: https://www.pokemon.com/us/pokemon-news/2021-season-pokemon-tcg-format-rotation/
+ * - 2020: https://www.pokemon.com/us/pokemon-news/2020-season-pokemon-tcg-format-rotation/
+ *
+ * For banned cards we are currently following this webpage
+ * - https://www.pokemon.com/us/pokemon-tcg-banned-card-list/
+ */
+
+/**
+ * for each cards the compiler will check
+ * - if the card is in the `series` list
+ * - if the card is in the `sets` list
+ * - if the card is in the `regulationMark` list
+ *
+ * then it will check if the card is currently excluded
+ * - if the card is in the `sets` list
+ * - if the card is in the `cards` list
+ */
+
+export const standard: Filter = {
+	includes: {
+		series: ['sm', 'swsh'],
+		sets: ['sm9', 'det1', 'sm10', 'sm11', 'sm115', 'sm12'],
+		regulationMark: ['D']
+	},
+	excludes: {
+		sets: [],
+		cards: [
+			// SM
+			'smp-SM85',
+
+			'sm35-45',
+
+			'sm5-114',
+
+			'sm6-83',
+
+			'sm8-90',
+			'sm8-91',
+
+			'sm10-78',
+			'sm10-165',
+			'sm10-178',
+
+			'sm11-206',
+			'sm11-253',
+
+			'sm115-58',
+			'sm115-68',
+
+			'sm12-186',
+			'sm12-194',
+			'sm12-265',
+		]
+	}
+}
+
+export const expanded: Filter = {
+	includes: {
+		series: ['bw', 'xy', 'sm', 'swsh'],
+		sets: [],
+		regulationMark: []
+	},
+	excludes: {
+		sets: [],
+		cards: [
+			// BW
+			'bw3-67',
+
+			'bw5-110',
+
+			'bw9-101',
+			'bw9-115',
+
+			// XY
+			'xy1-124',
+
+			'xy2-23',
+
+			'xy4-99',
+			'xy4-118',
+
+			'xy5-133',
+			'xy5-158',
+
+			'xy6-77',
+			'xy6-106',
+
+			'xy7-74',
+			'xy7-75',
+
+			'xy9-98',
+			'xy9-109',
+
+			'g1-71',
+
+			// SM
+			'smp-SM85',
+
+			'sm35-45',
+
+			'sm5-114',
+
+			'sm6-83',
+
+			'sm8-90',
+			'sm8-91',
+
+			'sm10-78',
+			'sm10-165',
+			'sm10-178',
+
+			'sm11-206',
+			'sm11-253',
+
+			'sm115-58',
+			'sm115-68',
+
+			'sm12-186',
+			'sm12-194',
+			'sm12-265',
+		]
+	}
+}