Mutavault [Morningtide] Core Set 2019 Prerelease Promos the player can activate mana

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

Who Shelters All enters the battlefield tapped

Set: Limited Edition Beta Type: Land — Plains Swamp Rare Cost: ({T}: Add {W} or {B}

lifelink Other Angels you control get +1/+1 and have lifelink

Mutavault [Morningtide] Core Set 2019 Prerelease Promos the player can activate manaSet: Morningtide Type: Land Rare Cost: {T}: Add {C}. {1}: Mutavault becomes a 2 2 creature with all creature types until end of turn. It's still a land. Some changelings born at Velis Vel never return, but their essence never leaves.