Temporary skill boost/Hitpoints

Hitpoints

Boost		Level increase	Visibility	Other info
	Hitpoints cape	1	Visible	Activating the cape's effect will increase the corresponding skill by 1.
	Bloody bracer	2	Visible	Drains prayer points by 2 + 4% of the player's current prayer level.
	Guthix rest	5	Visible	Also restores 5% of run energy and reduces venom to poison or reduces poison damage by 1.
	Elidinis Statuette	7	Visible	Requires completion of Spirits of the Elid. Any lost Hitpoints are restored prior to the boost. Fully restores Prayer points and Special attack.
	Amulet of the damned	10	Visible	When wearing the amulet with the Guthan's set, the player is able to heal for up to 10 points above their maximum health.
	Abidor Crank	15	Visible	Only found in the Temple Trekking minigame.
	Saradomin brew	3-16	Visible	Boosts defence by $\lfloor Level\times {\frac {1}{5}}\rfloor +2$ and hitpoints by $\lfloor Level\times {\frac {15}{100}}\rfloor +2$. Reduces Attack, Strength, Magic and Ranged levels by $\lfloor Level\times {\frac {1}{10}}\rfloor +2$. Hitpoints can rise above normal level with the boost.
	Anglerfish	3-22	Visible	Heals for $\lfloor Level\times {\frac {1}{10}}\rfloor +2\times \lfloor Level\times {\frac {1}{25}}\rfloor +5\times \lfloor Level\times {\frac {1}{93}}\rfloor +2$.