A neat trick is employing a permanent that automatically counters spells, such as Jin-Gitaxias, Progress Tyrant or Decree of Silence to completely ice out your opponents and steal their spells for free
When it enters the battlefield, if the player discards a card with one of many forms of counters on it, including flying, then the Indominous Rex enters with that type of counter on it
Time Warp All of Brawl's extra turn spells are decent, but Time Warp stands out as a cheap option that doesn't exile itself, so you can recur it and even set up infinite turn combos with cards like Displacer Kitten and Tamiyo, Collector of Tales
So far, the hive has been quiet
Power Artifact only really sees cEDH play, but its a win condition in that format
Since the announcement back in July, fans have been anticipating the release eagerly with the expectation that it will sell out