Millstone Deck WIP

This creature enters with X +1/+1 counters on it, where X is the number of instant and sorcery cards in all graveyards.

{2}{U}, Remove a +1/+1 counter from this creature: Draw a card, then discard a card.

Other Zombie creatures you control get +1/+1.

{2}{B}, {T}: Exile target creature card from a graveyard. Create a 2/2 black Zombie creature token.

Consuming Aberration's power and toughness are each equal to the number of cards in your opponents' graveyards.

Whenever you cast a spell, each opponent reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

Enchant player

Whenever enchanted player is attacked, create a 2/2 black Zombie creature token. Each opponent attacking that player does the same.

Target player mills ten cards.

Flying

As this creature enters, choose an opponent.

Haunting Apparition's power is equal to 1 plus the number of green creature cards in the chosen player's graveyard.

[+1]: Draw a card. Target player mills a card.

[0]: Target player mills ten cards.

[−7]: Any number of target players each draw twenty cards.

{5}, {T}: Target player mills X cards, where X is the number of cards in that player's graveyard.

Target opponent mills seven cards.

Mortivore's power and toughness are each equal to the number of creature cards in all graveyards.

{B}: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

{1}{B}: Return this card from your graveyard to the battlefield tapped.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Whenever this creature deals combat damage to a player, that player exiles the top four cards of their library. If two or more of those cards have the same name, repeat this process.

As this creature enters, choose a player.

Sewer Nemesis's power and toughness are each equal to the number of cards in the chosen player's graveyard.

Whenever the chosen player casts a spell, that player mills a card.

Target opponent mills thirteen cards.

{3}{U}{U}: Put this card from your graveyard onto the battlefield transformed. Activate only as a sorcery.

When this creature dies, you may pay {1}{B}. If you do, return it to the battlefield tapped under its owner's control.

Whenever equipped creature attacks, defending player reveals cards from the top of their library until they reveal a land card. The creature gets +1/+0 until end of turn for each card revealed this way. That player puts the revealed cards into their graveyard.

Equip {2}