Some of the more traditional creature types, such as [c]Elf[/c], [c]Goblin[/c], and [c]Merfolk[/c], have many cards that encourage you to focus exclusively on one creature type
Ultimate Guard Deck Box: MTG Edge of Eternities - Omnihive 1000+ Xenoskin Ultimate Guard Deck Box: MTG Edge of Eternities - Omnihive 1000+ Xenoskin Ultimate Guard The Omnihive 1000+ Xenoskin, featuring officially licensed MTG art from "Edge of Eternities", is a mass storage box designed to hold multiple deck boxes, dice and/or Play-Mats at onceor alternatively a large collection of single cards (up to 1000 double-sleeved)
Exiling certainly works in taking care of Avacyn, same with dealing out -1/-1 counters
It was just the best, and by such a margin, it defied all rhyme or reason, eventually resulting in the only two bans between March 2005 and January 2017(!) Yeah, of course Jace was broken, here
If you're unfamiliar with Kingdom, check out this thread #mtg #edh #cardconjurer
I know that Golgari life gain is supported enough that this is less off-beat than some of the other decks proposed, but this article is already long enough without me including a section arguing for and against each of the options