Dog Days of Summer
During the Dog Days of Summer, raise the woof with some Legendary Creatures! Each Diamond Summon has a chance to fetch a Dog Box, which holds 1 of 10 Ruff Creatures, 5 of which are Legendary!
Legendary: Cerberus, Banshee, Lich of Pain, Spider Queen, and Demon.
Epic: Gazer, Shadow, Hunchback Porter, Raptor, and Dark Elf.