The item has 4 charges. When you fail a Constitution saving throw to maintain Concentration, you can take a Reaction and expend 1 of the item's charges to succeed instead. The item regains 1d4 expended charges daily at dawn.
{
"name": "Mind Sharpener",
"page": 112,
"type": "RG|XDMG",
"__prop": "item",
"rarity": "uncommon",
"source": "EFA",
"charges": 4,
"entries": [
"The item has 4 charges. When you fail a Constitution saving throw to maintain {@status Concentration|XPHB}, you can take a {@variantrule Reaction|XPHB} and expend 1 of the item's charges to succeed instead. The item regains {@dice 1d4} expended charges daily at dawn."
],
"recharge": "dawn",
"_category": "Other",
"reqAttune": true,
"_entryType": "ring",
"_textTypes": [
"ring"
],
"_attunement": "(Requires Attunement)",
"_isEnhanced": true,
"_entrySubType": "",
"classFeatures": [
"replicate magic item|artificer|efa|2|efa"
],
"rechargeAmount": "{@dice 1d4}",
"_valueFromRarity": 40000,
"_attunementCategory": "Requires Attunement"
}