In some areas, its necessary to keep a large collection because there isnt anywhere locally that sells a lot of singles this is the case where I live, so we tend to keep hold of four of all our commons and uncommons so so that we can change Standard decks without having to buy a lot of cards online
And you know what was winning and being positioned as one of the most powerful strategies in that environment
(When a creature with renown 1 deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.) Whenever a renowned creature you control deals combat damage to a player, double the number of +1/+1 counters on it
You couldnt sleeve up a new deck for your local game store night or booting up Arena without knowing youd be playing against the Viven Cauldron deck at least three times
It's actually one of the first published locations for the Forgotten Realms (it was featured in a novel shortly before that world's full introduction in 1987), and ended up being part of an extensive retcon that incorporated other settings into the Sword Coast