Poison and Ignite go through shield.

I killed Earth shield with Poison and ignite.
With the comp you mention above they dont have healer.
So stacks poison is the best way to kill them. Max stack does 3000 HP I think.

I'd prefer someone with AOE Tai such as.

Kimimaro.
Pro:
Chance to block
Resistance stacks after taking dmg
AOE Tai

Kidomaru