Infinity Stones Saga

The Power Stone in a bare hand

• A giant cloud of smoke swallows whoever holds it, as on Xandar. It swells out from the hand in a second to a round mass of dark smoke up to 22 blocks across and 10 high (bigger with every hand joined), turning round the holder, the inside faster than the outside. Violet light flashes inside it like lightning in a thundercloud, rings of smoke roll out of it along the ground and at the waist every second and a half, and when the stone is let go (or takes its holder) the cloud rolls outward and thins away instead of vanishing.
• Inside it the world goes violet: a purple haze closes in (stronger when it flashes), with glittering motes and streaks of light whipping round, the stone's light crawling over the ground at the holder's feet, and the stone blazing in the fist with a streak of light across it. It replaces the small glowing puffs that only hugged the body.
• "Take my hand" works. Use an empty hand on someone holding the bare Power Stone to take their hand, or on anyone already holding it to take theirs (everyone has two hands, so you can make a chain, as Gamora, Drax and Rocket did). In third person your arms reach out and the hands meet, light runs between them and their skin cracks with the stone's light too. Everyone joined shares the burn and is spared the storm's lashes. Use the same hand again to let go; the grip breaks beyond 4 blocks, and everyone lets go when the holder does. Players near the holder are told how. Standing close is no longer enough to share the burn on its own.