Is there any room for Kokusho here? He'd be great with High Market/Phyrexian Tower and Reya Dawnbringer for recursion. High Market and Phyrexian Tower are also decent for protecting Kaalia from being tucked.

Edit: It would also allow you to play things like Dragon Mage and Yosei to recur with Reya. I know this kinda takes the deck in a different direction, but I think it would still be feasible. Crucible of Worlds might be necessary for the reliance on lands that can sac creatures though.