Due to practical concerns, I then chose the less fashionable, classical approach
Your opponent has cast a weirdly outdated board wipe, and you're busy wondering why it isn't a Vanquish the Horde
You also cant make any choices or decisions for the player that would be called for by the tournament rules (such as whether to take an intentional draw or whether to call a judge)
When, at the beginning of their turn, a player can no longer draw any cards from his or her library , that player has lost
(2018-04-27) Lands are never cast, so abilities that trigger "whenever you cast a historic spell" won't trigger if you play a legendary land
Scapeshift can be a great way to get a lot of landfall triggers in a single turn and can trigger other abilities focused on lands leaving the battlefield