While that's a question only you can answer, I'd point most players towards Bracket 2 or Bracket 3 to start
Yidris, Maelstrom Wielder has almost 5000 decks on EDHrec and may be hitting a new stride, as the last two years have seen quite a few cards that care about things being cast from exile
Looking through TCGPlayer at the time of this writing there were 10 pages of Iconic Masters and 12 pages of Zendikar non-foils listed
It gives Yveltal BREAK that little bit of extra damage to take Knock Outs on Pokemon-GX/EX and, more importantly, it places damage counters on Benched Pokemon-GX and -EX so that Baleful Night does Bench damage to them
Collectors value the unusual Eevee-Snorlax pairing, which makes it distinctive among eevee evolutions cards that feature solo Eeveelutions rather than hybrid partnerships
Eternatus' ability, Pressure, adds to its daunting presence, making it a challenging opponent that can drain the PP of moves faster, which is a strategic hurdle in both competitive play and storyline encounters