March of the Machine

Elspeth's Smite | Instant | | Elspeth's Smite deals 3 damage to target attacking or blocking creature. If that creature would die this turn, exile it instead. | Livia Prima

Enduring Bondwarden | Creature | Human Scout | Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.) When this creature dies, put its counters on target creature you control. | Kim Sokol

Kor Halberd | Artifact | Equipment | Equipped creature gets +1/+1 and has vigilance. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.) | Bastien L. Deharme

Progenitor Exarch | Creature | Phyrexian Cat Cleric | When Progenitor Exarch enters the battlefield, incubate 3 X times. (To incubate 3, create an Incubator token with three +1/+1 counters on it and {2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.) {T}: Transform target Incubator token you control. | Marie Magny

Surge of Salvation | Instant | | You and permanents you control gain hexproof until end of turn. Prevent all damage that black and/or red sources would deal to creatures you control this turn. | Dominik Mayer

Tarkir Duneshaper | Creature | Dog Warrior | {4}{G/P}: Transform Tarkir Duneshaper. Activate only as a sorcery. ({G/P} can be paid with either {G} or 2 life.) | Denys Tsiperko