Power Bestowal

You are correct; humans are foolish. But you have no need to die, I will grant you power. What to do with this power, you should know.Power Bestowal is the ability to bestow strength, new abilities and powers upon others.

Overview
The user can give new abilities, strength or superpowers to others. So far, Orochi and "God" are the only known beings with this ability.

Orochi
The Monster Cells generated by Orochi; can bestow significant increases in power on a human when consumed willingly, by transforming the affected individual into a Mysterious Being. The stronger the human, the stronger the monster transformation will be.

God
"God" can bestow powers upon humans and transform them into Mysterious Beings. It gave Homeless Emperor, originally an ordinary human, the ability to summon energy spheres which are capable of causing great destruction similar to that of the Dragon-level threat Vaccine Man. Homeless Emperor's newfound power from "God" also makes him become a Dragon-level Mysterious Being and capable of easily dominating the S-Class hero Zombieman during their battle. "God" has also granted Psykos a massive power boost during her fusion with Orochi, increasing their potency to such devastating levels that a single energy attack from the newborn fusion is able to cut through the Earth's surface, lifting the oceanic crust and creating tsunamis over a portion of the planet's hemisphere, and even able to contend with Tatsumaki, an extremely powerful S-Class hero that is regarded as the Hero Association's ultimate weapon.

Thanks to the powers received from "God", Garou awakened to the flow of energy and behaviour of all forces in the cosmos; the Hero Hunter also having become capable of fighting against even a serious Saitama, albeit losing in the end.

A human touching one of the mysterious cubes is able to contact with "God" and be offered power by it, which turns them into a Mysterious Being if they are worthy enough. But if not, they will face "forfeiture" and presumably die. It is unclear how "God" deems someone worthy of its powers. This mysterious figure has attempted to manipulate others into accepting its power by personally appearing before them (or rather on their minds) while disguising itself as the individual that they seem to respect, having changed its appearance to that of Blast and Bang in its attempts on Tatsumaki and Garou respectively. It has been shown that the human must at least touch God's hand in order to receive its power. "God" can take back the granted powers along with the lives of the wielders if it so wishes.

Trivia

 * Although God has granted Homeless Emperor the ability to summon and control energy spheres at will, it is unclear if his superhuman speed and reflexes are also from the same source.