Have

Grim Tutor

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Altar of the Brood

Whenever another permanent you control enters, each opponent mills a card.

Imperial Seal

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Vampiric Tutor

Lurrus of the Dream-Den

Companion — Each permanent card in your starting deck has mana value 2 or less. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.)
Lifelink
Once during each of your turns, you may cast a permanent spell with mana value 2 or less from your graveyard.

Heartless Summoning

Creature spells you cast cost {2} less to cast.
Creatures you control get -1/-1.

Black Lotus

{T}, Sacrifice this artifact: Add three mana of any one color.

Dark Ritual

Swamp

Myr Retriever

When this creature dies, return another target artifact card from your graveyard to your hand.

Entomb

Search your library for a card, put that card into your graveyard, then shuffle.

Sign in Blood

Target player draws two cards and loses 2 life.

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Brain Pry

Choose a nonland card name. Target player reveals their hand. That player discards a card with that name. If they can't, you draw a card.