I doubt youll get to use the 6-mana mode very often, but Honored Knight-Captain is a good enough 2-drop without it
Cards similar to Essence Drain include Cleansing Screech, Dark Nourishment, Unfriendly Fire
Urza, Lord High Artificer is a prime example of a commander having artifact and draw synergy
I literally just have a little blurb at the end of my PucaTrade profile that says, If you have any foreign or weird foils that you dont know what to do with, Ill take em, and people message me out of the blue all the time with cards they want to get rid of
Sacrifice decks almost inevitably use this to great advantage
$13.99 Swan Song Edge of Eternities Commander Decks $74.99 Mana Drain Commander Legends $14.99 Mystic Remora (Borderless) Dominaria Remastered Variants $9.99 Sapphire Medallion Modern Horizons 3 $39.99 Misty Rainforest Modern Horizons 2 $2.49 Mystic Sanctuary Throne of Eldraine $4.99 Gitaxian Probe New Phyrexia $37.99 Cyclonic Rift Secrets of Strixhaven Mystical Archive $4.49 Snap Dominaria Remastered $42.99 Otawara, Soaring City Kamigawa: Neon Dynasty $84.99 Fierce Guardianship Commander Masters $84.99 Fierce Guardianship Commander 2020 0 results found
