msem-instigator

Equipped creature gets +2/+0 and has “{T}, Unattach Javelin: It deals 2 damage to target creature.”
Equip {2}

Advance {2} (Cast this for {2} to advance it as it enters. {2}: Advance this as a sorcery.)
Equipped creature gets +X/+0 and has flying, where X is the number of times it and Jet Pack have advanced this turn.
Equip {1}

As Joyous Chromatelk enters, choose a color.
All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors.
{T}: Add one mana of the chosen color.

When Junktrawler enters, create a tapped colorless Powercell artifact token with “{T}: Add {C}.”
Tap another untapped artifact you control: Junktrawler gets +1/+1 until end of turn.

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast a spell that's three or more colors.

Equipped creatures you control get +1/+1.
Equip {2}

When Keepsake of Binding enters, exile target creature an opponent controls until Keepsake of Binding leaves the battlefield.
{4}, {T}: Tap target creature with power less than the exiled card's power.

{T}: Add {C}.
{T}: Add {C}{C}. Spend this mana only to cast artifact spells. Activate only if you control three or more artifacts.

Equipped creature gets +3/+2.
Equip enchantment creature {1}
Equip artifact creature {2}
Equip {3}

Trample
{T}: Draw a card. Put a charge counter on Kilani, Awakened Colossus.
Remove a charge counter from Kilani: Double Kilani's power until end of turn.

{T}: Create a 1/1 colorless Servo artifact creature token.
{T}, Sacrifice an artifact: Killdrone Assembly Works deals 1 damage to any target.

When Kiri Yoroi enters, create a 2/2 colorless Spirit creature token and attach Kiri Yoroi to it.
Equipped creatures you control get +1/+1.
Equip {2}

Equipped creature gets +1/+2.
Whenever equipped creature deals combat damage, judge it. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)
Equip {2}

Whenever Knowledge Extractor deals combat damage to a player, draw a card.

Krismite Shard enters tapped.
{1}, {T}, Sacrifice Krismite Shard: Aetherize target creature you control. (To aetherize, create a token that's a copy of it, then exile that token.)

{T}: Add {C}.
When Krismite Vault is put into a graveyard from the battlefield, create a tapped colorless artifact token named Mox Krismite with “{T}: Add one mana of any color.”

{T}: Add {C}.
Tap an untapped creature you control: Kurayami Shrine becomes a 1/1 Spirit creature with deathtouch until end of turn. It's still a land.

L.O.T.U.S. enters tapped.
When L.O.T.U.S. enters, conjure three cards named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)
{T}: Add three mana of any one color.

Whenever one or more creatures you control deal damage to a player, put a charge counter on Lake of Rage.
{T}: Add {C}.
{T}, Remove a charge counter from Lake of Rage: Add one mana of any color.

Whenever equipped creature attacks, put a +1/+1 counter on it.
Equip {2}

Flying

{T}: Add {C}.
{2}, {T}: For each color among cards in your graveyard, add one mana of that color.

When Lightblessed Claymore enters, attach it to target creature you control.
Equipped creature gets +2/+0 and has lifelink.
Equip {4}

Activated abilities cost {1} more to activate unless they're mana abilities.

Advance {2} (Cast this for {2} to advance it as it enters. {2}: Advance this as a sorcery.)
Equipped creature gets +1/+1 for each artifact you control.
Equipped creature must be blocked by an additional creature for each time it and this artifact have advanced this turn to be blocked.
Equip {3}