mtg how to play double sided cards search for double-sided in database How to use double sided

While ostensibly a combo piece when you consider cards like the aforementioned Dockside Extortionist or Mana Geyser, its also a great way to buy back the odd spell or two, or rebuild a board after a board wipe

if not universal, for the respective print run

If you have more than one hourglass, you can use them all

An ability that triggers when a creature becomes monstrous won't trigger if that creature isn't on the battlefield when its monstrosity ability resolves

And, if you're just after something new and shiny, here are the latest MTG Arena codes and sets from the MTG 2023 release schedule.

Devour Intellect When Intellect Devourer enters the battlefield, each opponent exiles a card from their hand until Intellect Devourer leaves the battlefield.Body Thief You may play lands and cast spells from among cards exiled with Intellect Devourer