Tales of Halloween Summon

General Information

 * Duration: 10/30 (Sun) ??:?? - 10/31 (Mon) ??:?? PST
 * 5 Hero Stones for 1 Roll
 * 1st roll guarantees a 4-star unit or higher
 * 50 Hero Stones for 10 Rolls
 * Guaranteed at least one 4-star+ units, and a "bunch of items"