Mox Emerald [Limited Edition Alpha]Set: Limited Edition Alpha Type: Artifact Rarity: Rare Cost: {0} {T}: Add {G}.

Players can't pay life or sacrifice creatures to cast spells or activate abilities

"There is nothing you can do that I cannot simply deny

Set: Limited Edition Beta Type: Artifact Rarity: Rare Cost: {1} {1}

Set: From the Vault: Twenty Type: Creature — Elf Druid Rarity: Mythic Cost: {G} {T}: Add {G}

Its controller can't cast spells this turn

Sacrifice Ally Encampment: Return target Ally you control to its owner's hand

Benalia has a complex caste system that changes with the lunar year

where X is the converted mana cost of the exiled creature

you may search your library for an Ally creature card

Set: Conspiracy Type: Enchantment Rarity: Rare Cost: {G} You may play an additional land on each of your turns

Set: Seventh Edition Type: Land Rarity: Rare Whenever City of Brass becomes tapped

Sacrifice Inventors' Fair: Search your library for an artifact card