If you Normal or Special Summon a "Star Seraph" monster(s) (except during the Damage Step): You can Special Summon this card from your hand, and if you do, draw 1 card, then you can Special Summon it if it is a "Star Seraph" monster
Once per turn, the opponent mills 3 cards from the top of their deck and if successful, destroy this card and add 1 "Sunburst" monster from the Deck to your hand
All of this has given the card a solid niche in cEDH, which is something very few Commanders can claim
Well, despite being sold out pretty much everywhere (despite a high asking price), HMV is offering the Revival Trance Collector's Edition Commander deck right now, and even looks to restocked the Counter Blitz and Limit Break Collector's Editions at the time of publication as well
If you're trying to build an Electric-type deck or are a completionist, go for it, but Charizard and Mewtwo are still the best packs to open first if you want an early advantage in the current meta
Theres an abundance of ways for you to untap Szeras and sacrifice a few creatures in the same turn to generate a ton of mana since its an artifact, but those creatures need to have cost a lot in the first place