I Have the Answer to Mega Malamar

I then summon yveltal to turn them into stone I then use my newly acquired powers to make them golems and command them to attack you

using that as a distraction i dissapear you can't see me I went to the void between the multiverses to find you at your weakest point from when before you met thur so that i can finish this goal of mine

Then me and the Malamar army attack!

And the time you took to summon the arrows gave a past but not this far back me time to get here. "As soon as I saw you in my past I knew something was wrong," I say. "I won't let you ruin my future!" Another portal bursts open and Ultimate Charizard of Unlimited Chaos Z comes to my side.