MTG Salvation

Link to deck

I've been fine-tuning and messing around with counter-soup Perrie voltron for a while now, but I'm still not satisfied. Are there any obvious Bant or Voltron cards I'm missing or should drop in favor of other cards? Budget isn't relevant as seen by the Rhystic Study and Gemstone Caverns and such. I recently dropped Steel of the Godhead for Spirit Mantle, but I've seen lots of people recommend Angelic Destiny over both. Any other suggestions? What other unique counters or Voltron cards can I include but still keep the list viable? Anything I should drop for Angelic Destiny?

At a glance, Iceburg seems like an easy way to get another counter type on the board. You'd probably want at least one land that can use or lose depletion counters, and Enclave Cryptologist should probably be Lighthouse Chronologist. Coral Reef also provides 2 unique counters for minimal cost. Arixmethes, Slumbering Isle, Djinn of Wishes, Magnetic Web, Oracle's Vault, Paradox Zone, Quarantine Field, Rasputin Dreamweaver, Replicating Ring, all cards with interesting abilities and unique counters.