Definitely avoid Kaalia, she gets expensive really quickly and lends herself to a lot of non-games. Edgar specifically has issues against wrath-heavy metagames, but can drop the table to the teens pretty quickly. Kaalia can too, but she's vulnerable to literally any removal spell, counterspell, most blockers, and your own manabase, while Edgar requires them to have wraths. The trick is finding the last few points of damage or protecting your board from wraths (cards like Blood Artist, Boros Charm, and the like are premium).
You're going to have a bad time playing against top-tier decks with Thassa's Oracle regardless in these colors, so I would either not worry about it or go heavy stax/mass land destruction.
You're going to have a bad time playing against top-tier decks with Thassa's Oracle regardless in these colors, so I would either not worry about it or go heavy stax/mass land destruction.
YMMV but most people play 4-player EDH.
The 1&2-drop version specifically is ban-worthy in 1v1.
My last version of the deck before I took it apart for reference, which is super cheap aside from the manabase for the most part:
1x Ayara, First of Locthwain
1x Blood Artist
1x Bloodcrazed Paladin
1x Bloodghast
1x Captivating Vampire
1x Changeling Outcast
1x Cordial Vampire
1x Cruel Celebrant
1x Dockside Extortionist
1x Dusk Legion Zealot
1x Forerunner of the Legion
1x Gifted Aetherborn
1x Guul Draz Assassin
1x Guul Draz Vampire
1x Indulgent Aristocrat
1x Kalastria Highborn
1x Knight of the Ebon Legion
1x Legion Lieutenant
1x Metallic Mimic
1x Mirror Entity
1x Olivia's Bloodsworn
1x Pulse Tracker
1x Purphoros, God of the Forge
1x Quag Vampires
1x Shadow Alley Denizen
1x Stromkirk Captain
1x Stromkirk Condemned
1x Tithe Drinker
1x Vampire Cutthroat
1x Vampire Hexmage
1x Vampire Interloper
1x Vampire Lacerator
1x Vampire of the Dire Moon
1x Vicious Conquistador
1x Viscera Seer
1x Badlands
1x Blood Crypt
1x Bloodstained Mire
1x Command Tower
1x Dragonskull Summit
1x Flooded Strand
1x Godless Shrine
1x Isolated Chapel
1x Marsh Flats
1x Plateau
1x Polluted Delta
1x Scalding Tarn
1x Scrubland
1x Snow-Covered Mountain
1x Snow-Covered Plains
13x Snow-Covered Swamp
1x Verdant Catacombs
1x Windswept Heath
1x Wooded Foothills
1x Arcane Signet
1x Arcum's Astrolabe
1x Bolas's Citadel
1x Obelisk of Urd
1x Skullclamp
1x Throne of the God-Pharaoh
1x Impact Tremors
1x Necropotence
1x Phyrexian Arena
1x Shared Animosity
1x Cabal Ritual
1x Culling the Weak
1x Dark Ritual
1x Defile
1x Dismember
1x Fire Covenant
1x Flawless Maneuver
1x Go for the Throat
1x Nameless Inversion
1x Path to Exile
1x Swords to Plowshares
1x Terminate
1x Unbreakable Formation
1x Vampiric Tutor
1x Demonic Tutor
1x Diabolic Intent
1x Night's Whisper
1x Sevinne's Reclamation
1x Sign in Blood
1x Sorin, Imperious Bloodlord
Don't build Kaalia, she only does two things: 1) End the game immediately, 2) Absolutely nothing.