Illusionist's Bracers and Selvala's Stampede

You mention Mayael's Aria but its not here?

Shield of the Oversoul for boss protection

Nessian Boar, Primeval Protector, Gigantosaurus

Thanks for the suggestions, carpecanum!

I'll definitely consider Illusionist's Bracers and Selvala's Stampede. Both look super cool!

I mention Mayael's Aria only because of nostalgia, I'm not particularly interested in trying to use it as a win-con. I know of cards like Mossbridge Troll that could work to win that way, but the first two modes (+1/+1 counters and gaining life) don't seem that impactful.

Shield of the Oversoul could be interesting, but I'd prefer effects like that on creatures with power 5 or greater. For example, I'm considering Spearbreaker Behemoth.

The creatures you mention are big, but I want my creatures to do more than just that. Especially without trample or evasion already tacked on, Primeval Protector and Gigantosaurus are not that exciting. I could see myself using Nessian Boar, though, since it can clear the way for other attackers.

Thanks for your thoughts :)

I use Primeval Protector because he throws out counters I can proliferate and because he usually comes out for only 3 or 4 mana. I thought you would be looking for counters because of the nostalgic enchantment.