Goblet of Vitality

Up to ten creatures can attune to this item
An unassuming wooden cup aside from the dark
stain on its interior left by blood absorbed into
the wood. The cup holds up to 50 hp worth of
blood. Blood of volunteers works best. Blood
taken by force taints and halves the efficacy of
its contents. Any attuned creature within 300ft
can use its reaction to use one or more points to
gain a bonus to any ability check, attack roll or
saving throw equal to half the points spend or
hp equal to the p