Ziatora's Proving Ground (Borderless Alternate Art) [Streets of New Capenna] GG52 When Archangel Avacyn enters the

When Archangel Avacyn enters the battlefield

They likely refer not to one mage

Set: Expedition: Base Set Type: Darkness Rarity: Holo Rare Retreat cost: Colorless

you may have that player gain control of Slicer until end of turn

Set: Sword & Shield: Crown Zenith Type: Grass Rarity: Secret Rare Retreat cost: Colorless

Ziatora's Proving Ground (Borderless Alternate Art) [Streets of New Capenna] GG52 When Archangel Avacyn enters theSet: Streets of New Capenna Type: Land Swamp Mountain Forest Rarity: Rare ({T}: Add {B}, {R}, or {G}.) Ziatora's Proving Ground enters the battlefield tapped. Cycling {3} ({3}, Discard this card: Draw a card.)