Superior slayer monster

Superior slayer monsters are more powerful versions of normal slayer monsters that have a chance to spawn upon the death of one of its lower-levelled variants. They can be encountered after purchasing the unlock Bigger and Badder for 150 Slayer reward points from any Slayer master. This can be toggled on and off afterwards without loss of points.

Killing a superior slayer monster will reward players with ten times the normal Slayer experience compared to what would be earned from the normal slayer monster. They will also give three rolls on the slayer monster's drop table. Once a superior slayer monster has spawned it is only attackable by the spawning player.

In addition, superior slayer monsters have three unique drops shared among all superior slayer monsters:
 * Imbued heart, which boosts the player's Magic level by 1 + 10% every seven minutes.
 * Dust battlestaff, which when equipped provides an infinite amount of air and earth runes.
 * Mist battlestaff, which when equipped provides an infinite amount of air and water runes.

There are elite versions of the following monsters:
 * Crawling Hand
 * Cave Crawler
 * Banshee
 * Rock Slug
 * Cockatrice
 * Pyrefiend
 * Basilisk
 * Infernal Mage
 * Bloodveld
 * Mutated Bloodveld
 * Jelly
 * Warped Jelly
 * Cave Horror
 * Aberrant Spectre
 * Deviant Spectre
 * Dust Devil
 * Kurask
 * Gargoyle
 * Nechryael
 * Greater Nechryael
 * Abyssal Demon
 * Dark Beast
 * Smoke Devil