{
  "name": "Ironskin",
  "level": 2,
  "school": "transmutation",
  "components": "V, S, DF/M",
  "range": "personal",
  "save": "none",
  "base_dc": 10,
  "cast_time": "standard",
  "effects": [
    {
      "type": "buff",
      "modifiers": [
        { "target": "ac", "value": 4, "bonus_type": "natural" }
      ],
      "duration_rounds": 60
    }
  ],
  "description": "Your skin hardens like iron: you gain a +4 enhancement bonus to your natural armor bonus (rising to +7 at caster level 15; the scaling is not modeled). Duration 1 min/level approximated as 60 rounds. The ability to dismiss the spell to negate one confirmed critical or sneak attack is not modeled."
}