Arguel's Blood Fast // Temple of Aclazotz (#90)

[
  {
    "name": "Arguel's Blood Fast",
    "type": "front",
    "rules": [
      "{1}{B}, Pay 2 life: Draw a card.",
      "At the beginning of your upkeep, if you have 5 or less life, you may transform Arguel's Blood Fast."
    ],
    "types": [
      "Enchantment"
    ],
    "colors": [
      "B"
    ],
    "subtypes": [],
    "mana_cost": "{1}{B}",
    "mana_value": 2,
    "supertypes": [
      "Legendary"
    ],
    "flavor_text": "Arguel's vision led him into the jungles of Ixalan ...",
    "color_identity": [
      "B"
    ]
  },
  {
    "name": "Temple of Aclazotz",
    "type": "back",
    "rules": [
      "(Transforms from Arguel's Blood Fast.)",
      "{T}: Add {B}.",
      "{T}, Sacrifice a creature: You gain life equal to the sacrificed creature's toughness."
    ],
    "types": [
      "Land"
    ],
    "colors": [],
    "subtypes": [],
    "mana_value": 0,
    "supertypes": [
      "Legendary"
    ],
    "flavor_text": "... to the lost temple of a bat-god of night, eternal enemy to the Threefold Sun.",
    "color_identity": [
      "B"
    ]
  }
]