When you cast a Cleric spell or use a Cleric feature that forces a creature to make a Constitution saving throw, you can give one creature Disadvantage on its saving throw against the spell or feature.
Fester
Raw data
{
"name": "Fester",
"page": 0,
"level": 6,
"__prop": "subclassFeature",
"header": 2,
"source": "ValdaSpire24Extras",
"entries": [
"When you cast a Cleric spell or use a Cleric feature that forces a creature to make a Constitution saving throw, you can give one creature {@variantrule Disadvantage|XPHB} on its saving throw against the spell or feature."
],
"className": "Cleric",
"classSource": "XPHB",
"subclassSource": "ValdaSpire24Extras",
"subclassShortName": "Pestilence"
}