actually no, once u start wearing tao, there are still couple of elements totally unaffected by whatever u put for default. Poison, Ghost and Holy basically. Most easily accessible one should be holy with aspersio, or enchant poison from gx buff outside. The one shot can still happen with double attack on +15 lindy thana.
Anyway, that's besides the point. I think it is unlikely to see another player actually whale for thana lindy (and +15 onwards anyway), so many other classes to choose from. So you are right that maybe nothing will one-shot. Basically i did learn from you guys about how retarded WOE is now, so that's good.
+12 Immune Shield.
Myst Card -30% Posion garment.
2 KBCs will take care of Holy.