Halloween Horror Summon

General Information

 * Duration: 10/20 (Thu) 8:00 - 10/30 (Sun) 07:59 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 two 4-star+ units, and one featured unit