Haste
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.)

Imprint — When Isochron Scepter enters the battlefield, you may exile an instant card with converted mana cost 2 or less from your hand.
, : You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

Whenever another artifact enters the battlefield under your control, put a +1/+1 counter on Jackknight. If that artifact is a Contraption, Jackknight gains lifelink until end of turn.

Jester's Mask enters the battlefield tapped.
, , Sacrifice Jester's Mask: Target opponent puts the cards from their hand on top of their library. Search that player's library for that many cards. That player puts those cards into their hand, then shuffles their library.

When Jester's Scepter enters the battlefield, exile the top five cards of target player's library face down. You may look at those cards for as long as they remain exiled.
, , Put a card exiled with Jester's Scepter into its owner's graveyard: Counter target spell if it has the same name as that card.

As Jeweled Torque enters the battlefield, choose a color.
Whenever a player casts a spell of the chosen color, you may pay . If you do, you gain 2 life.

Junk Golem enters the battlefield with three +1/+1 counters on it.
At the beginning of your upkeep, sacrifice Junk Golem unless you remove a +1/+1 counter from it.
, Discard a card: Put a +1/+1 counter on Junk Golem.

When Kaleidostone enters the battlefield, draw a card.
, , Sacrifice Kaleidostone: Add .

When Khalni Gem enters the battlefield, return two lands you control to their owner's hand.
: Add two mana of any one color.

Imprint — When Knowledge Pool enters the battlefield, each player exiles the top three cards of their library.
Whenever a player casts a spell from their hand, that player exiles it. If the player does, they may cast a spell from among other cards exiled with Knowledge Pool without paying its mana cost.

When this creature enters the battlefield, return target host card or card with augment from your graveyard to your hand.

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Germ creature token, then attach this to it.)
Equipped creature gets +1/+1 for each Swamp you control.
Equip ( can be paid with either or 2 life.)

Equipped creature has ", Unattach Leonin Bola: Tap target creature."
Equip (: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)

When Letter Bomb enters the battlefield, sign it and shuffle it into target player's library. That player reveals each card they draw until they draw Letter Bomb. When that player draws Letter Bomb, it deals 19½ damage to them.

When Letter Bomb enters the battlefield, sign it and shuffle it into target player's library. That player reveals each card they draw until they draw Letter Bomb. When that player draws Letter Bomb, it deals 19½ damage to them.

When Leveler enters the battlefield, exile all cards from your library.

Sunburst (This enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.)
Remove a +1/+1 counter from Lunar Avenger: Lunar Avenger gains your choice of flying, first strike, or haste until end of turn.

As Lurebound Scarecrow enters the battlefield, choose a color.
When you control no permanents of the chosen color, sacrifice Lurebound Scarecrow.

Reveal Lurking Automaton as you draft it and note how many cards you've drafted this draft round, including Lurking Automaton.
Lurking Automaton enters the battlefield with X +1/+1 counters on it, where X is the highest number you noted for cards named Lurking Automaton.

Equipped creature gets +1/+1 for each charge counter on Mace of the Valiant and has vigilance.
Whenever a creature enters the battlefield under your control, put a charge counter on Mace of the Valiant.
Equip