Eternal Pact with Python (DRC-095 XR) [Descent into the Raven's Catacombs]

[Extension Rule] You can start the game with this card in your extension rule area if your starting ruler has "Caelth", "Daomr", or "Siphone" in its name, and you have seven cards with "Python" in their name in your deck, exactly three among them having the warden type, and you don't have cards with attributes other than water or the attributes of your starting ruler in your deck or rune deck. J/rulers you control with [Divinity] gain [Divinity] (+6). You must have exactly 0, 5, or 6 cards in your rune deck. Your maximum hand size is five and cannot be increased or decreased. Whenever an entity is returned to your hand >>> Rest target entity. If you do, Foresee 1. This ability triggers only during your turn and only once per turn.