Few cards matched the incredibly powerful effects across multiple formats all at once and it's popularity still to this day makes it one of the best mtg cards
The Expected Value of Amonkhet Amonkhet is looking pretty exciting, with new gods, powerful planeswalkers, and exciting returning mechanics
Secondly, most repeated card draw effects are board state related and can not currently be modeled (e.g., SkullclampSkullclamp, Mentor of the MeekMentor of the Meek or Soul of the HarvestSoul of the Harvest)
The major downside is removal between casting Eddie Brock and transforming, but this is an MDFC that you can run out on the back half if you want to skip Eddie Brock entirely
This legendary Boros angel puts in tons of work if your Commander tables are combat-centric
Both mechanics create a banked mana advantage, which you are not pressured to spend within one turn for the sake of efficiency