The Lost Caverns of Ixalan

Roaming Throne | Artifact Creature | Golem | Ward {2} As Roaming Throne enters the battlefield, choose a creature type. Roaming Throne is the chosen type in addition to its other types. If a triggered ability of another creature you control of the chosen type triggers, it triggers an additional time. | Anastasia Balakchina

Threefold Thunderhulk | Artifact Creature | Gnome | Threefold Thunderhulk enters the battlefield with three +1/+1 counters on it. Whenever Threefold Thunderhulk enters the battlefield or attacks, create a number of 1/1 colorless Gnome artifact creature tokens equal to its power. {2}, Sacrifice another artifact: Put a +1/+1 counter on Threefold Thunderhulk. | Xavier Ribeiro

Throne of the Grim Captain // The Grim Captain | Legendary Artifact // Legendary Creature | // Skeleton Spirit Pirate | {T}: Mill two cards. Craft with a Dinosaur, a Merfolk, a Pirate, and a Vampire {4} ({4}, Exile this artifact, Exile the four from among permanents you control and/or cards in your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.) // Menace, trample, lifelink, hexproof Whenever The Grim Captain attacks, each opponent sacrifices a nonland permanent of their choice. Then you may put an exiled creature card used to craft The Grim Captain onto the battlefield under your control tapped and attacking. | Tiffany Turrill