The PCs come across a town with a strange curse: Every morning, those who have grown up here wake up with the memories of someone else. They do not find this strange and have no idea it is happening. They calmly wake up and start these new lives as though they have always been that way.
The cause: A wizard who lived there was spurned by a maiden he was infatuated with. His attempt to manipulate her memories into believing they were already together and that she loved him went horribly awry.
Meta energy...lent by lunos of the seven skys, father of the dragongods, has the power to alter events, rippling through time and space, no other form of energy is stronger, with the ability to even destory planets.It rips apart sheilds by going back in time before they were brought up. No weapon can withstand the force of such It is a power usable only by families bloodline, and those we have chosen to gift with miniscule amounts of its power. It not being of this plane, isn't even subjective to the so called "gods" here. Different worlds, different levels of power.
It is a power of change and manipulation, essentially leaving us to create with it what we will, if our mind is strong enough to do so.
Large amounts of this inserted into any one being/energy will cause them to implode, ripping themselves apart and sucked into another dimension entirely.
The limitations of meta are only set by ones mind, an open mind has no limits to the powers of meta.