Comet

CardXDMGp. 2502024SRD

The next time you enter combat against one or more Hostile creatures, you can select one of them as your foe when you roll Initiative. If you reduce your foe to 0 Hit Points during that combat, you have Advantage on Death Saving Throws for 1 year. If someone else reduces your chosen foe to 0 Hit Points or you don't choose a foe, this card has no effect.

Raw data
{
  "set": "Deck of Many Things",
  "face": {
    "href": {
      "path": "decks/BMT/Deck of Many Things/12-comet.webp",
      "type": "internal"
    },
    "type": "image",
    "width": 850,
    "credit": "Vallez Gax",
    "height": 1552
  },
  "name": "Comet",
  "page": 250,
  "srd52": true,
  "__prop": "card",
  "source": "XDMG",
  "entries": [
    "The next time you enter combat against one or more {@variantrule Hostile [Attitude]|XPHB|Hostile} creatures, you can select one of them as your foe when you roll {@variantrule Initiative|XPHB}. If you reduce your foe to 0 {@variantrule Hit Points|XPHB} during that combat, you have {@variantrule Advantage|XPHB} on {@variantrule Death Saving Throw|XPHB|Death Saving Throws} for 1 year. If someone else reduces your chosen foe to 0 {@variantrule Hit Points|XPHB} or you don't choose a foe, this card has no effect."
  ]
}