Sunlit Sentinel (MP23-EN074) - 25th Anniversary Tin: Dueling Heroes Mega Pack 1st Edition

You can Set this card from your hand to your Spell & Trap Zone as a Spell. Once per turn, during the Standby Phase of the next turn after this Set card was destroyed and sent to the GY: You can Special Summon this card, then destroy all cards your opponent controls in this card's column.