Infinite Mill Combo (Commander) Mill archetype in EDH now has a new fantastic combo helmed by Lier, Disciple of the Drowned commander card from Innistrad: Midnight Hunt
In the past, it used to always have an exception (with "nonblack" being the most popular) but we've been allowing black to have more straight-up kill without exceptions these days
20 Details are on the official website
Getting them along with the graveyard exile of Act III is worth the relatively low 2B mana cost
Most card draw you want to keep for yourself, but if it's down to the last few cards in an opponent's library, targeting a player with Mathemagics to draw before their draw step can give them no choice other than to take the L
Opalescence is clearly an enchantment deck build-around, which let you turn Replenish into not only a source of lots of virtual card advantage, but also a massive battlefield position that could easily dominate and end the game