First introduced in Wilds of Eldraine, the Adventure mechanic allows players to cast the Adventure half of a card, then later cast the other half from exile once the Adventure resolves
So, if youre a player who wants to participate in more than just one or two drafts a week or any other gem-only events, you have the option to buy gems
The only thing I think I want to change so far is finding some room for Myrel, at least in the sideboard, if nothing else
It enters the battlefield and lets you discard a card (ideally Vivi Ornitier) and draw a card
Avengers Assemble includes Captain America, Team Leader, a 3/3 focused on growing in power as other heroes enter the battlefield, while Nick Fury makes those heroes cheaper to cast
On many occasions the effect is better as it gives you more action right away