Hi rob,
Thanks a lot for your answer!
I can't remember having enough
to play Bone Walls, except maybe in late game. I haven't tried but you could also test either upped Sundials for a one turn stall (and leading the opponent to play more creatures which is good for SoSac) or SoD as in Poison Dials. The latter also can help you to go back over 40 HP if needed.
Regarding a low damaging opponent:
Try to outrush him by playing SoP for not too long. Small damage over many turns can still hurt. It can be quiet hard to estimate... I usually more or less follow this rule: the more Chrysaoras I have the less turns I keep SoP in play. (Also depends on remaining HP of opponent and his healing power and/or shields). Since you have three SoP it's possible that by the time you draw a second/third one you meanwhile have 3 more Chrysaoras on the field than the 1 before. So it might be an advantage to play SoP again for one or two turns.
Also, remember that everything over 10 damage gives you less damage when SoSac is active and thus slows the opponent down (e.g. : 40-2x12 = 16 dmg < 2x12 = 24; so you saved yourself 8 dmg). You can use this tactic well against growth creatures. The AI will increase their atk even if SoSac is active. So, try to see through your opponents strategy early and play your SoSac's accordingly. Knowing early with what kind of damage you have to deal always helped me a lot for timing my SoSac.
Thanks again for playing it and good luck with your grinding!