Blizzard has launched a month-long blood drive to celebrate the release of Diablo IV's second season, Season of Blood. There will be three tiers of rewards that will unlock as more people donate, with the final reward being a sweepstakes for a custom liquid-cooled PC infused with human blood.
Can’t wait to have the blood go rancid and spill everywhere
Worth noting it is “infused with” i.e. probably a very small ratio of blood to water.