This spell can't be countered.
Counter target noncreature spell.

Artifact, instant, and sorcery spells your opponents cast cost more to cast.
[−1]: Until your next turn, prevent all damage that would be dealt to and dealt by target permanent an opponent controls.

Trample
Whenever Dreadhorde Arcanist attacks, you may cast target instant or sorcery card with converted mana cost less than or equal to Dreadhorde Arcanist's power from your graveyard without paying its mana cost. If that spell would be put into your graveyard this turn, exile it instead.

Haste
Whenever Dreadhorde Butcher deals combat damage to a player or planeswalker, put a +1/+1 counter on Dreadhorde Butcher.
When Dreadhorde Butcher dies, it deals damage equal to its power to any target.

At the beginning of your upkeep, you lose 1 life and amass 1. (Put a +1/+1 counter on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.)
Whenever a Zombie token you control with power 6 or greater attacks, it gains lifelink until end of turn.

When Dreadhorde Twins enters the battlefield, amass 2. (Put two +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.)
Zombie tokens you control have trample.

Menace (This creature can't be blocked except by two or more creatures.)
, Sacrifice another creature or planeswalker: Put two +1/+1 counters on Dreadmalkin.

Duskmantle Operative can't be blocked by creatures with power 4 or greater.

Flying
When Elite Guardmage enters the battlefield, you gain 3 life and draw a card.

: Add .
, , Sacrifice Emergence Zone: You may cast spells this turn as though they had flash.

Flying

Enter the God-Eternals deals 4 damage to target creature and you gain life equal to the damage dealt this way. Target player mills four cards. Amass 4. (Put four +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.)

, : Draw a card, then discard a card.

When Eternal Skylord enters the battlefield, amass 2. (Put two +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.)
Zombie tokens you control have flying.

Eternal Taskmaster enters the battlefield tapped.
Whenever Eternal Taskmaster attacks, you may pay . If you do, return target creature card from your graveyard to your hand.

Whenever a land enters the battlefield under your control, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

When Fblthp, the Lost enters the battlefield, draw a card. If it entered from your library or was cast from your library, draw two cards instead.
When Fblthp becomes the target of a spell, shuffle Fblthp into its owner's library.

Flying
Whenever you cast an instant or sorcery spell that targets a creature you control, exile that card instead of putting it into your graveyard as it resolves. If you do, return it to your hand at the beginning of the next end step.

Search your library and/or graveyard for a creature card with converted mana cost X or less and put it onto the battlefield. If you search your library this way, shuffle it. If X is 10 or more, creatures you control get +X/+X and gain haste until end of turn.

Destroy up to three target creatures with toughness X or less. If X is 10 or more, return all creature cards from your graveyard to the battlefield.