Are you just gonna do fatties or are you thinking combos? Because I personally think he could be a very good combo general if you can find the right effects to combo off with. That being said, a card you might like for either strategy is Archetype of Endurance . Big ol' beastie with an effect that keeps your combos or other big beasties protected.

Nice! I'd suggest Rampaging Baloths , it's crazy with Temur Ascendancy .

Might seem kinda weird, but Riku of Two Reflections could make this interesting with the doubling fat creatures aspect

@Mr.RakdosPriest, yeah he looks fun. But Surrak is my true commander. NEVER AGAIN WILL THEY COUNTER MY SHIT!

Deadeye Navigator and Conjurer's Closet to abuse the shit out of etb effects. Asceticism and Spearbreaker Behemoth for further protection. Warstorm Surge for uncounterable damage. Drumhunter for mana and card advantage. Paleoloth and Eternal Witness to return cards from the yard.

Thats why Riku would be a better support here. Other potential fun stuff (especially when doubled): Hypersonic Dragon , Stormbreath Dragon , Fierce Empath , Forgotten Ancient , Soul of the Harvest , Bonfire of the Damned Things that are still fun, but can't/shouldn't be doubled: Chromatic Lantern , Lurking Predators , Azusa, Lost but Seeking (for rampy potential)

Bear's Companion and Icefeather Aven seem very... meh for edh. For 5 or 6 mana cost you should be dropping bombs. If either had a bigger body with them it would be fine, but these are sub par because they don't have. Consider Venser, Shaper Savant instead of the aven. Same size, but cheaper and does the same thing and more. And Wild Pair would turn all your creatures into a better Bear's Companion

@Mr.RakdosPriest, I really want to use Surrak. In my gamestore Blue is way too big in EDH with counters and it's getting on my nerves

I get that. Any of the things I suggested could work well with Surrak