@igotnopicks  
Curaga or full life spells would do.

“I will never die…as long as there is darkness in the hearts of ponies!”

@SocDev  
I prefer this some as Sombra’s battle theme. It sounds more like a royal entity got corrupted.

Dude, no wonder you’re failing, You have all the casters in the front row!

I love this, I’ve wanted to make an animation about this.

So, let me see if I got the jobs right…  
Twilight - Sage - Knows magic from all schools  
Rarity - Gem Mage (I know it’s not real. Just deal with it.) - Uses gems to help in combat  
Applejack - Monk - Prefers bare-fisted combat  
Pinkie Pie - Mime/Bard - Can mimic the actions of others/Can sing to help in combat  
Fluttershy - Beastmaster - Can control, tame, and capture wild beasts  
Rainbow Dash - Dragoon/Thief - Can leap into the air to attack/Prefers agility to pure power
 
This is my opinion. If you don’t agree, then just reply and say what you think is best.

Sombramus.

@McGack  
I might just do that

@Nightwing  
hmm well look up FF4 Die hard% its an interesting run to say the least

@McGack  
I don’t remember being able to have Fusoya in your party for that fight

@Nightwing  
my favourite method is where you get Fusoya to use Upt co on Zeromus

@NotThatAnyoneCares  
Ironically the easiest way I found to beat Zeromus is to not even use any of Rydia’s spells or summons just all out physical attacks with Cecil Rosa healing and casting defensive spells Kain using Jump finally having Edge throw any pointy objects in your inventory at his face. Reason being is Zeromus loves to counter summons and big spells with stuff like White 3 times in a row.

Sweetie Belle: Here!  
Apple Bloom: Let us help you!
 
Scootaloo: I know you can do it!  
Spike: Come back to us!
 
Princess Luna: Have courage, Twilight Sparkle!  
Princess Celestia: Trust in yourself, my faithful student.
 
Princess Cadance: May the light of love shine upon you.  
Shining Armor: My sister. Use the love within you, and allow it to fill the Crystal Heart. Sombra, show your true face!
 
-Lumino

@RIG
 
God help me, then, because I’ve never managed to beat Zeromus.
 
Also: Twilight and friends must really kick ass if they got past Demon Wall.

Quick use Heal.

I love Final Fantasy IV’s music :D

Creator was harder than Zeromus.