The Reality stone

At the begining of your upkeep, remove all power counters from The Reality stone and then add X
power counters to The Reality stone where X is
the number of Infinity stones you control.
{t}, Remove 1 power counter: Target creature
gains target keyword ability until end of turn.
{t}, Remove 3 power counters: Target permanent becomes a copy of another target permanent.
{t}, Remove 5 power counters: You choose the colours, types, mana costs and abilities of all permanents.