There are plenty of good ways to deal with creatures, so as long as you save them for the right targets, it is mostly about small edges, synergy, using your cards at the right time, a timely combat trick or double-block, and executing your archetypes game plan correctly
Both Jeskas Will and Culling Ritual are big players in both cEDH and stronger EDH tables, and offer unparalleled resources that are format-contingent
Manic Scribe lets you mill each opponent for three each turn if you have delirium, which should be easy to enable with mill cards like Mesmeric Orb
Legendary Creature - Nightmare Phyrexian Color tag templates(None) Pawn of Ulamog Whenever this creature or another nontoken creature you control dies, you may create a 0/1 colorless Eldrazi Spawn creature token
Blue: Black: Red: Shivan Dragon (Shout out to Dragon Whelp and Nalathni Dragon) Green: None, not even Cockatrice Gold: The Elder Dragon cycle Those are the only flyers prints up through 1995 that can kill a 5-toughness flying defender
It's a bit complicated for an entry-level Bracket 2 deck, but it's also a unique take on what could've just been a regular +1/+1 counter deck