The Treant is a Tier 1 Destructive Troop. It targets Ground units only, and has Defenses as its primary target.
Although Treants, like all Destructive Troops are supposed to attack Buildings first (usually towers), this is not the case recently. After the recent updates some break away and attack troops when Towers are still standing. This could be an anomaly or an implemented features by IGG but the jury is still out on that.
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