You've arrived just in time to help in the fight against a great Calamity Beast
As a result, they look shinier and feel thicker, weighing significantly more than a regular foil
6 Slow Fetches An Underappreciated Budget Option There's a lesser known half-cycle of slow fetch lands from Mirage that enter the battlefield tapped, but sacrifice to fetch up one of two different basic land types
Owing to the prevalence of catch-up ramp (Archaomancers Map, Deep Gnome Terramancer, Keeper of the Accord and the emergence of Archivist of Oghma), Path to Exile just about takes the spot
This means you only get a handful of triggers in a given game and need to be more reliant on the actual cards in the deck
As for ways to actually flicker them, there are plenty of options in Azorius