The Mind stone

Shroud
{4}: You gain control of this artifact. Any player
may activate this ability.
{x}, {t}: Look at the top X cards of target players library.
{x}{x}, {t}: Draw up to X cards. Only activate if you control 3 or more Infinity Stones.
{x}{x}, {t}: Gain control of up to X target creatures.
Only activate if you control 5 or more Infinity
Stones.