"Spoopy Scythe" enters the battlefield with a soul counter on it.
Equipped creature gets +1/+1 for each soul counter on "Spoopy Scythe".
Whenever equipped creature dies, put a soul counter on "Spoopy Scythe".
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Fabricate 1 (When this creature enters the battlefield, put a +1/+1 counter on it or create a 1/1 colorless Servo artifact creature token.)

As Adaptive Automaton enters the battlefield, choose a creature type.
Adaptive Automaton is the chosen type in addition to its other types.
Other creatures you control of the chosen type get +1/+1.

Landfall — Whenever a land enters the battlefield under your control, equipped creature gets +2/+2 until end of turn.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Aeon Engine enters the battlefield tapped.
, Exile Aeon Engine: Reverse the game's turn order. (For example, if play had proceeded clockwise around the table, it now goes counterclockwise.)

Reveal Aether Searcher as you draft it. Reveal the next card you draft and note its name.
When Aether Searcher enters the battlefield, you may search your hand and/or library for a card with a name noted as you drafted cards named Aether Searcher. You may cast it without paying its mana cost. If you searched your library this way, shuffle it.

Flying
When Aethersphere Harvester enters the battlefield, you get (two energy counters).
Pay : Aethersphere Harvester gains lifelink until end of turn.
Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Defender
When Akroan Horse enters the battlefield, an opponent gains control of it.
At the beginning of your upkeep, each opponent creates a 1/1 white Soldier creature token.

When Alchemist's Vial enters the battlefield, draw a card.
, , Sacrifice Alchemist's Vial: Target creature can't attack or block this turn.

When Aligned Hedron Network enters the battlefield, exile all creatures with power 5 or greater until Aligned Hedron Network leaves the battlefield. (Those creatures return under their owners' control.)

As Alloy Golem enters the battlefield, choose a color.
Alloy Golem is the chosen color. (It's still an artifact.)

Whenever another permanent enters the battlefield under your control, each opponent mills a card.

Altar of the Lost enters the battlefield tapped.
: Add two mana in any combination of colors. Spend this mana only to cast spells with flashback from a graveyard.

Whenever a permanent enters the battlefield tapped and under your control, untap it.

When Ancestral Blade enters the battlefield, create a 1/1 white Soldier creature token, then attach Ancestral Blade to it.
Equipped creature gets +1/+1.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

When Ancestral Statue enters the battlefield, return a nonland permanent you control to its owner's hand.

Whenever a creature enters the battlefield under your control, you may have Angel's Tomb become a 3/3 white Angel artifact creature with flying until end of turn.

Flying
When this creature enters the battlefield, you may destroy target nonland permanent.

Whenever a land enters the battlefield, Ankh of Mishra deals 2 damage to that land's controller.

Flying
When Arcanist's Owl enters the battlefield, look at the top four cards of your library. You may reveal an artifact or enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.