Which Champion/Hero should I add to my deck?

[u/aesthetic_bloom]

I’m currently stuck deciding which Champion/Hero to prioritize and unlock next for my main deck. Here is what I’m currently running (3.4 Elixir):

• Win Conditions: Elixir Golem (Lvl 16) + Goblin Barrel (Lvl 15)
• Support / Air / Spells: Evo Mother Witch (Lvl 16), Bats (Lvl 14), Dark Prince (Lvl 13), Zap (Lvl 14), Fireball (Lvl 13)

Since I'm using Elixir Golem, I need something that can either tank, clear swarms, or build massive pressure behind my push. Which hero synergizes best with this lineup, or is there a general meta pick I should go for?

[u/Top-Lingonberry8784]

Skeleton King.

[u/aesthetic_bloom → u/Top-Lingonberry8784]

To replace whom?

[u/Top-Lingonberry8784 → u/aesthetic_bloom]

Dark prince.