Edgar Markov

[stray nexus]

Hello fellow planeswalkers. Could someone please help me optimize my Edgar Markov deck? I don't want it to be cedh but I want it to be pretty powerfull. I don't have resources for expensie cards like Olivia and Bloodline Keeper and that's why I left them out. Any help would be greatly appreciated.
https://www.moxfield.com/decks/TuxF5dilYUOfgvbHWmuT8g

[cold rover]

[[Elenda, the Dusk Rose]] is a good include and I think she’s getting cheap. Another one is of course [[Sanguine Bond]] and [[Exquisite Blood]] but it is a little pricey. I would also recommend [[Mirkwood Bats]] and [[Horn of the Mark]] from the new set.

[paper ether]

https://scryfall.com/card/2x2/207/elenda-the-dusk-rose

Elenda, the Dusk Rose <:mana2:292901509060886528><:manaw:1007102126813610074><:manab:292901508872273920>

Legendary Creature — Vampire Knight
Lifelink
Whenever another creature dies, put a +1/+1 counter on Elenda, the Dusk Rose.
When Elenda dies, create X 1/1 white Vampire creature tokens with lifelink, where X is Elenda's power.
Her centuries-long search is ended.
1/1

https://scryfall.com/card/c21/153/sanguine-bond

Sanguine Bond <:mana3:292901508771610624><:manab:292901508872273920><:manab:292901508872273920>

Enchantment
Whenever you gain life, target opponent loses that much life.
"Blood is constant. Every drop I drink, someone must bleed." —Vradeen, vampire nocturnus

https://scryfall.com/card/jmp/231/exquisite-blood

Exquisite Blood <:mana4:292901508712890379><:manab:292901508872273920>

Enchantment
Whenever an opponent loses life, you gain that much life.
Even as humans regained the upper hand, some still willingly traded their lives for a chance at immortality.

https://scryfall.com/card/ltr/95/mirkwood-bats

Mirkwood Bats <:mana3:292901508771610624><:manab:292901508872273920>

Creature — Bat
Flying
Whenever you create or sacrifice a token, each opponent loses 1 life.
"The enemy has many spies and many ways of hearing." —Gandalf
2/3

https://scryfall.com/card/ltr/241/horn-of-the-mark

Horn of the Mark <:mana2:292901509060886528>

Legendary Artifact
Whenever two or more creatures you control attack a player, look at the top five cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
"He that blows this horn shall set fear in the hearts of his enemies and joy in the hearts of his friends." —Éowyn