Some considerations:

The usefulness of Heliod, God of the Sun and Ajani's Chosen as sideboard cards. Should I include more to be able to transform my deck a little better?

Selesnya Charms vs Pacifism - I liked the charms for big creature removal and the added flexibility of its other 2 abilities, but would Pacifism synergy better since it is an enchantment and can control any creature?

The utility Spear of Heliod brings better than having a 4th Gift of Orzhova? I really like Gift because it provides evasion which is important, but can the Spear provide enough usefulness by giving me a way to remove creatures and also make my own stronger?

My Maybeboard are primarily for sideboard, I figure Gift of Immortality can synergy well with Ajani's Chosen and Voice of Resurgence where as they will constantly be creating tokens as they die and it can even be attached to a Cat token through Ajani's Chosen triggered ability making it easier for it to go off even more. Rootborn Defenses is a potential counter vs Supreme Verdict but wonder if its necessary or if I can hold onto a creature on my hand and use that as insurance vs Verdict.

I would consider replacing Nylea, God of the Hunt on your mainboard. It seems like by the time you can get her out and active, the mana would better be spent on something else. I would recommend adding one more Fleecemane Lion . The rest of the mainboard looks solid.

For your sideboard I would definitely consider some removal such as Last Breath or Celestial Flare . The former is great at taking out Master of Waves and the latter is good at destroying hexproof/indestructible creatures.

You also look a tad mana heavy, I assume that it's because a lot of your cards have double costs. If you get too mana heavy you may want to remove some guildgates, as tapped land slows you down quite a bit.

Overall it looks good. Good luck with your deck. +1

I like the idea of going with a different approach from what is doing well right now, where you are focusing more on creatures instead smaller ones you pump up a ton. I've been trying to find a different way to go about it myself as I don't just like copying a good deck pros are using and going with it.

The deck I'm attempting to build is here: Enchants R Us

Spider Umbra Hyena Umbra add Totem Armor which prevent against board wipes. Rancor will go back to your hand should a creature die. Spirit Mantle will protect them from creatures.

The only problem I may see is a lack of card draw, relying on bestow with some of the creatures (bestow costs are 4-5 mana) and just an overall high mana curve. The goal is to get your hexproof creatures out in turn 1-2 before they can be countered. They may have hexproof but they can still be countered, and by T3 (Witchstalker ).

The staples to this archetype right now are Slippery Bogle , Gladecover Scout .

If you want to stick with this method, you could go with Hero of Iroas which will lower the aura cost of each one by a single colorless. Get 2-3 of those out and your bestows suddenly are nothing to cast. Hopeful Eidolon is also another good option. Keen Sense will give you card draw.

Let me know what you think of my suggestions and the fact that this deck may be too slow to get around the quicker burn/counters that a lot of decks are running.

elicit This deck is Standard, meaning it can only use cards from Return to Ravnica, Gatecrash, Dragon's Maze, M14, Theros, and Born of the Gods. That makes most of your suggestions illegal for use in this deck. If it wasn't Standard, I'm sure they would be great ideas, but they simply can't be used in this deck.

You have my apologies! I didn't catch that, so my bad!

Why four Advent of the Wurm? I know it's just a sideboard card for this deck, but the tokens are just going to be killed by a red "do 2 damage to all creatures spell" + Bile Blight