I know some Magic cards have substantially longer English type lines than Instant, and several fill up very-nearly the entire available space (e.g
Theres probably even more detail that I could tease out of this, but even so, just look at the astonishing amount of theme and backstory that can occupy a single card
One possibility is to cast Apocalypse, a card that gets rid of everything, including your hand, leaving you only with Barren Glory, but that needs to be done on your upkeep, so there are options like Leyline of Anticipation or Emergence Zone to give these spells flash
To move a counter from one permanent to another, the counter is removed from the first permanent and put on the second
Draconautics Engineer Draconautics Engineer is a nice little switch-flipper for aggressive decks, but the key rule is that you can only activate each exhaust ability once