They consume Wyvern Milk, which can also be spawned using gfi wyvern_milk 1 0 0 .
Example (Level 150): cheat GMSummon "Wyvern_Character_BP_Poison_C" 150 Note: The final tamed level will be (roughly 225). poison-wyvern-spawn-command
Their primary attack is a poison gas ball that deals massive damage over time in an area of effect (AoE). They consume Wyvern Milk, which can also be