Events with deck building restrictions are more fun than ones with emblems

I think some more clever use of emblems could help encourage interesting decks. I think the best option is generally both, though: have a weird emblem, and restrict deckbuilding a bunch.

E.g., I think an example of a better Ixalan event would have been:

Treasure Tribal - When choosing a deck to use in this event, you must pick a creature type. Whenever you attack with one or more creatures of that type, draw a card and create a treasure token.

To keep the format diverse, some key cards from the strongest and most aggro tribes are banned, e.g.: Sorin, Imperious Bloodlord.

This would reflect Ixalan's tribal theme and the idea of a unified bands/crews competing for treasure; and it adds a more flavorful way to incorporate treasure. Raids and expeditions are how you get treasure on Ixalan, it doesn't just passively accumulate.

/r/MagicArena Thread