Also there is a lot of variety for the Masters aka the towers, with different tactics to suit your playstyle be it swarming enemy with trash units, dropping big units and buffing them or just say 'Screw it, I'll do this myself' and drop your own Master onto the enemy's tower to join the fight yourself. Imagine Clash Royale, but your 2 mana Crossbow Dudes won't be beaten by the enemy's Crossbow Dudes just because he played the game longer or spent more money on it.