{
    "name": "aberrant ground",
    "text": "The ground in a 10-foot radius around the {NAME} is doughlike difficult terrain. Each creature that starts its turn in that area must succeed on a DC {(8,PROF,STR,+,+)} Strength saving throw or have its speed reduced to 0 until the start of its next turn.",
    "subfeatures": [
        {
            "trigger": [ "N end of turn", "self" ],
            "conditions": [],
            "effects": [{
                "target": "self",
                "effect": [ "Terrain in X ft radius is difficult", 10 ],
                "duration": "Start of next turn"
            }]
        },
        {
            "trigger": [ "N start of turn", "creature" ],
            "conditions": [
                [ "N is within radius X of N", "creature", 10, "self" ],
                [ "N succeeds dc X ABILITY save by at least X", "creature", "(8,PROF,STR,+,+)", "STR", 0 ]
            ],
            "effects": [{
                "target": "creature",
                "effect": [ "Set movement speed to X", 0 ],
                "duration": "Start of next turn"
            }]
        }
    ]
}