Drops from Aht Urghan VW T1 mob Vanasarvik in Mount Z.
Vanasarvik is an Imp that uses the typical high level/NM Imp moves and (re)summons 4 Elder's Imps upon use of Bugle Call. All 5 mobs synchronize TP moves Grating and Stifling Tantara and Frenetic Rip. Both Tantaras are high damaging AoE moves that do around 500-600 damage to an Ochain PLD. Both are negated under Fanatic's Drink.