March of the Machine

Sun-Blessed Guardian | Creature | Human Cleric | {5}{R/P}: Transform Sun-Blessed Guardian. Activate only as a sorcery. ({R/P} can be paid with either {R} or 2 life.) | Brian Valeza

Harried Artisan | Creature | Human Artificer | Haste {3}{W/P}: Transform Harried Artisan. Activate only as a sorcery. ({W/P} can be paid with either {W} or 2 life.) | Caio Monteiro

Invasion of Kylem | Battle | Siege | (As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When Invasion of Kylem enters the battlefield, up to two target creatures each get +2/+0 and gain vigilance and haste until end of turn. | Johann Bodin

Mirror-Shield Hoplite | Creature | Human Soldier | Vigilance Whenever a creature you control becomes the target of a backup ability, copy that ability. You may choose new targets for the copy. This ability triggers only once each turn. | Alex Brock