
Web-Shooters | Artifact | Equipment | Equipped creature gets +1/+1 and has reach and "Whenever this creature attacks, tap target creature an opponent controls."
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.) | Camille Alquier

Costume Closet | Artifact | | This artifact enters with two +1/+1 counters on it.
{T}: Move a +1/+1 counter from this artifact onto target creature you control. Activate only as a sorcery.
Whenever a modified creature you control leaves the battlefield, put a +1/+1 counter on this artifact. (Equipment, Auras you control, and counters are modifications.) | Ben Maier

Flying Octobot | Artifact Creature | Robot Villain | Flying
Whenever another Villain you control enters, put a +1/+1 counter on this creature. This ability triggers only once each turn. | Jonathan Wayshak

The Soul Stone | Legendary Artifact | Infinity Stone | Indestructible
{T}: Add {B}.
{6}{B}, {T}, Exile a creature you control: Harness The Soul Stone. (Once harnessed, its ∞ ability is active.)
∞ — At the beginning of your upkeep, return target creature card from your graveyard to the battlefield. | Adam Paquette

Eerie Gravestone | Artifact | | When this artifact enters, draw a card.
{1}{B}, Sacrifice this artifact: Mill four cards. You may put a creature card from among them into your hand. (To mill four cards, put the top four cards of your library into your graveyard.) | Francisco Badilla

Spider-Slayer, Hatred Honed | Legendary Artifact Creature | Human Villain | Whenever Spider-Slayer deals damage to a Spider, destroy that creature.
{6}, Exile this card from your graveyard: Create two tapped 1/1 colorless Robot artifact creature tokens with flying. | Warren Mahy

Spider-Bot | Artifact Creature | Spider Robot Scout | Reach
When this creature enters, you may search your library for a basic land card, reveal it, then shuffle and put that card on top. | Joshua Cairos

Subway Train | Artifact | Vehicle | When this Vehicle enters, you may pay {G}. If you do, search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.) | Camille Alquier