From Melvor Idle
This page is up to date (v1.2).
Pet ID: melvorD:Ty
Source: Mastery
Drop Chance: See: Acquiring Pets
Effect: +3% Global Mastery XP
Part of 100% Completion: Yes

Ty is a pet that is not tied to any specific skill. Instead, Ty has a chance to be acquired whenever an action that rewards Mastery experience is performed.