Love seeing another Mayael the Anima deck and awesome job with the HP reference. So first act of business...ramp. With a deck that has such a high CMC, it needs more land/land producing cards. Overgrowth, Trace of Abundance, and Market Festival are cheap and effective.

Second, there are only 26 creatures in the deck that can be cheated in with Mayael the Anima. Nothing is worse than paying six land and having her effect to give you a dead draw.

Ulamog, the Infinite Gyre "cast" effect wont trigger as well. Unfortunately Mayael the Anima doesn't cast the creatures, however ETB effect will work such as Tyrant of Discord, Craterhoof Behemoth, and Terastodon are just a few examples.

And last but not least....your planeswalkers. With the reprinting of Domri Rade, you can pick one up for under five bucks. Arlinn Kord  ^Flip would also help with her haste ability and then after she flips, she can give everyone trample.

+1 from me and good luck!!

If you prefer a visual, check out my Mayael the Anima deck. He can not afford. Great success.

While it's less effective in this deck, given the towering mana costs that you have for these creatures, my favorite Naya all-star is still worth consideration.Skyshroud Elf. The strictly better Druid of the Anima, mana fixing out of green into the full naya compliment, and still tapping for one mana.