Given Valgavoth's story in Duskmourn, being the enemy of the table at large is an absolute flavor win for the story but it's easy to call something a flavor win when you don't get knocked off the table for running it
Ferocious That creature gains indestructible until end of turn if you control a creature with power 4 or greater
The second metagame consideration is that control strategies have not been putting up good results recently compared to the more proactive archetypes, and may not be well-positioned
Case in point, on December 7, 2023, a CGC Pristine 10 Alpha Ancestral Recall sold for $38,500 in a CertifiedLink auction
Yes, Acererak the Archlich is a key card in 9 combo(s) in our combo database, linked from the Combos section of this page
This has its advantages, creating a lot of artifact permanents and offering versatility in how you redistribute the counters