The most powerful unicorn? · 6:57pm Nov 29th, 2015
Twilight Sparkle
Able to warp reality and make a baby dragon full grown when she was just a filly.
Became Princess Celetstia's most prized pupil.
Completed Starswirl's Spell.
Was able to harness the power of three alicorns to battle Lord Tirek.
Is able to teleport like no pony's business.
Sunset Shimmer
Was once Princess Celestia's most prized pupil.
Was able to cross over into another world without magic.
Able to use the magic from Twilight's crown to become a she-demon.
Was able to turn the tide against the Sirens by singing.
Defeated Dark Twilight with the power of Friendship.
Starlight Glimmer
Is able to remove a pony's cutie mark.
Can interpret and make alterations to one of Starswirl's spells.
Can hold her own against a full-fledged alicorn princess!
Has mastered time-travel and all its eventualities.
Feel free to add your own. I'm curious to see which one you guys thinks is the mightiest unicorn.