Pets & Capes
Pets
Every skill has a pet. Drop rate: 1 per 10,000,000 XP gained in that skill. When a pet drops, there is a 20% chance it's shiny.
All Skills Pet: 1 per 100M XP (any skill). Shiny: 1 per 500M XP.
Pet Bonuses
Each pet provides -0.25s duration reduction for its skill (or +1 effective combat level for combat skills) AND +5% XP for that skill. All 28 skills get the XP bonus.
Skill Capes
Unlocked at level 99. Same bonuses as pets: -0.25s duration or +1 effective level, plus +5% XP for that skill.
Trimmed Capes
Unlocked at 100,000,000 XP. Same bonuses, stacks with skill cape (+5% XP stacks too).
Max Cape
Unlocked when all 28 skills reach level 99. Provides -0.25s duration for all rollable skills, +1 effective level for all combat skills, and +5% XP for all skills.
Trimmed Max Cape
Unlocked when all 28 skills reach 100,000,000 XP. Stacks with max cape (+5% XP for all skills).
XP Bonus from Capes & Pets
Per skill: cape (+5%) + trimmed cape (+5%) + pet (+5%) + shiny pet (+5%) + max cape (+5%) + trimmed max cape (+5%) + all-skills pet (+5%) + all-skills shiny pet (+5%) = max +40% XP from capes and pets.