Enchant creature
Enchanted creature has "Whenever this creature attacks, you may tap or untap target permanent."

Create two 2/2 black Zombie creature tokens.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Defender
When Gleaming Barrier dies, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Whenever you crank Gnomeball Machine, create two 1/1 colorless Gnome artifact creature tokens.

At the beginning of combat on your turn, if you both own and control Graf Rats and a creature named Midnight Scavengers, exile them, then meld them into Chittering Host.

First strike
When Grim Initiate dies, 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.)

When Harvest Hand dies, return it to the battlefield transformed under your control.

Kicker (You may pay an additional as you cast this spell.)
Flying
When Heartstabber Mosquito enters the battlefield, if it was kicked, destroy target creature.

Landfall — Whenever a land enters the battlefield under your control, Hedron Rover gets +2/+2 until end of turn.

Landfall — Whenever a land enters the battlefield under your control, Hedron Scrabbler gets +1/+1 until end of turn.

As Herald's Horn enters the battlefield, choose a creature type.
Creature spells you cast of the chosen type cost less to cast.
At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.

Constellation — Whenever Humbler of Mortals or another enchantment enters the battlefield under your control, creatures you control gain trample until end of turn.

When you cast this spell, you gain half X life and draw half X cards. Round down each time.
Flying, trample
Hydroid Krasis enters the battlefield with X +1/+1 counters on it.

Vigilance
When Intrusive Packbeast enters the battlefield, tap up to two target creatures your opponents control.

Equipped creature gets +1/+2.
Whenever an Artificer enters the battlefield under your control, you may attach Inventor's Goggles to it.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's converted mana cost.)
When you cast this spell, create two 1/1 green Insect creature tokens.

This spell costs less to cast for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)
When Journey to Oblivion enters the battlefield, exile target nonland permanent an opponent controls until Journey to Oblivion leaves the battlefield.

: Add .

Devoid (This card has no color.)
: Kozilek's Shrieker gets +1/+0 and gains menace until end of turn. (It can't be blocked except by two or more creatures. represents colorless mana.)