- 2 bone towers, -2 stone towers, -1 Diamond Shield, -3 quicksand.
possibly - 1/2 warden + 1/2 deathstalker, that's personal preference.
Also, as a similar build, swap the earth for water and use octopii which can stall 3/4 times as many creatures as wardens.
Tbh when i saw this i thought you were somehow going to use spiders to remove any flying, buff up wardens and use them to kill enemy creatures, which would be a fun idea.
EDIT:
How about making it a duo, swapping all pillars for pendulems, taking out 1 or 2 which would then be unneeded and using (i cant believe i am suggesting this card) Shard of patience, which would slightly benefit the wardens too giving them some killing power?