Ravnica Allegiance

Azorius Locket | Artifact | | {T}: Add {W} or {U}. {W/U}{W/U}{W/U}{W/U}, {T}, Sacrifice Azorius Locket: Draw two cards. | Craig J Spearing

Gate Colossus | Artifact Creature | Construct | This spell costs {1} less to cast for each Gate you control. Gate Colossus can't be blocked by creatures with power 2 or less. Whenever a Gate enters the battlefield under your control, you may put Gate Colossus from your graveyard on top of your library. | Izzy

Glass of the Guildpact | Artifact | | Multicolored creatures you control get +1/+1. | Dimitar Marinski

Gruul Locket | Artifact | | {T}: Add {R} or {G}. {R/G}{R/G}{R/G}{R/G}, {T}, Sacrifice Gruul Locket: Draw two cards. | Kev Walker

Junktroller | Artifact Creature | Golem | Defender {T}: Put target card from a graveyard on the bottom of its owner's library. | Chris Seaman

Orzhov Locket | Artifact | | {T}: Add {W} or {B}. {W/B}{W/B}{W/B}{W/B}, {T}, Sacrifice Orzhov Locket: Draw two cards. | Volkan Baǵa

Rakdos Locket | Artifact | | {T}: Add {B} or {R}. {B/R}{B/R}{B/R}{B/R}, {T}, Sacrifice Rakdos Locket: Draw two cards. | Sung Choi

Scrabbling Claws | Artifact | | {T}: Target player exiles a card from their graveyard. {1}, Sacrifice Scrabbling Claws: Exile target card from a graveyard. Draw a card. | James Paick

Screaming Shield | Artifact | Equipment | Equipped creature gets +0/+3 and has "{2}, {T}: Target player mills three cards." Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.) | Titus Lunter

Simic Locket | Artifact | | {T}: Add {G} or {U}. {G/U}{G/U}{G/U}{G/U}, {T}, Sacrifice Simic Locket: Draw two cards. | Yeong-Hao Han

Tome of the Guildpact | Artifact | | Whenever you cast a multicolored spell, draw a card. {T}: Add one mana of any color. | Randy Gallegos