What units to use as games goes on

[rollems]

sorry for incomplete information.

i am playing Paladin. on normal difficulty.
i took lot of casualities early cause i was learning... i can go back and do better.. but i dont feel like repeating.

what are damage dealer ? how you identify them ?

how does Royal Thorn spawn meatshield that reduce the damage your main tank(s) take. ???

is stone skin spell limited? if yes from where i get them

thanx.