This loop relies on Gaea's Cradle producing enough green mana to fuel a perpetual cycle of bouncing and recasting. By using Wirewood Symbiote to bounce Allosaurus Shepherd while untapping Voyaging Satyr, and then using Temur Sabertooth to rescue Wirewood Symbiote, you generate more than enough mana from Gaea's Cradle to replay both creatures. Allosaurus Shepherd doesn't just anchor the loop as an affordable Elf; its passive ability also ensures that your green spells can't be countered while you run through this infinite sequence.