Splashing in some Shard of Sacrifice instead of sundials might work...
As long as you have more than 40 hp, 1 SoSa=2 sundial, at that point of the game usually the opponent has 10+ damage on the board, and also guarantees that nothing can kill you (except holy light lol) for those turns.
I'm not sure though. 40 hp might be too much.
I had the same thought, after a bit of playing in pvp2 I felt this version was best:
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6rm 6rm 6rm 6rm 6rt 6rt 6rt 6rt 710 710 710 710 710 710 710 718 718 718 718 718 718 71a 71a 71b 71b 7gl 7gl 7gl 7gl 7gl 8pp
The ?? are of course Sosa's.
It can be tricky to play, which is why I would always try to hold on to the SoD's for as long as possible, and not hesitate too much about playing SoSa, especially if the poison damage is enough to kill the opp, f.e. let's say you have 2 sosa's in hand and 90 HP and know poison should (obv. purify can screw you) kill the opp. in 4 turns I would for sure play one.
At first I played with 6 SoSa's but found it to be overkill, in many cases Bonewall is better, obviously the timing between both has to be just right.
Of course this version really can't be called Dialsora anymore, but the idea is exactly the same