If you're looking to build around legendary creatures, be sure to consider other powerful options like Primevals' Glorious RebirthPrimevals' Glorious Rebirth, Shanid, Sleepers' ScourgeShanid, Sleepers' Scourge, Urza's Ruinous BlastUrza's Ruinous Blast, and Ratadrabik of UrborgRatadrabik of Urborg
Shimmering Skies Outside of some unique staples and slight mechanical interests, this set was pretty, bright, and flashy but not as interesting in terms of gameplay
Brudiclad, Telchor Engineer requires a lot of the same setup steps as Esix, Fractal Bloom
Scythecat Cub Scythecat Cub is simply ridiculous and that trample ensures you have a good target for those +1/+1 counters
In 60-card formats, this is a fine deal, but in commander where you have 40 life to start with, it's an incredible trade