The Mary-Sue terminators must kill yet another abomination to canon everywhere

Twilight Sparkle must protect her peace from invading ruffians

An old element returns to meet with desire and tempting

The white changeling must find Cadence and learn about emotions before they destroy it from the inside

They arrive. They are advanced. They wish to experiment. None can refuse the "offer".

A woman goes to Equestria in a form that isn't too well-seen.

The white changeling creates its own hive, but begins to feel something it shouldn't

A don becomes a small unicorn foal and becomes briddled by the unexpected

A view of the Doctor and what he is planning.

Two worlds that seem so similar meet up in a rather unique way, allowing both to meet the threats of eachother and find solutions to them.

Within a hidden base of another universe lies a pit of untold horrors...

Some things were just never made to meet eachother...

Soluna is an alico-Not even in your description.*crack*

A strange scenario unfolds with a single man

Luna gets a dream about a pony in black and white that will destroy everything if not stopped.