Throne of Eldraine

Brimstone Trebuchet | Artifact Creature | Wall | Defender, reach {T}: Brimstone Trebuchet deals 1 damage to each opponent. Whenever a Knight enters the battlefield under your control, untap Brimstone Trebuchet. | Yeong-Hao Han

Clockwork Servant | Artifact Creature | Gnome | Adamant — When Clockwork Servant enters the battlefield, if at least three mana of the same color was spent to cast it, draw a card. | David Palumbo

Henge Walker | Artifact Creature | Golem | Adamant — If at least three mana of the same color was spent to cast this spell, Henge Walker enters the battlefield with a +1/+1 counter on it. | Titus Lunter

Shambling Suit | Artifact Creature | Construct | Shambling Suit's power is equal to the number of artifacts and/or enchantments you control. | Nicholas Gregory