Droideka's skill description is very confusing, and I often witness people making erroneous statements in regard to its function. I'd like to clear this up for everyone once and for all. At skill 40, the description reads, "This unit is immune to all attacks from enemies in the same column, as long as the total damage received by the unit does not exceed 70% of its max HP." How Droideka's skill actually works: Droideka begins taking damage from enemy units in the same column when 30% of its max HP remains (At skill 40). In other words, Droideka is immune to ALL damage from enemies in the same column until his HP drops below 30%. Until his HP drops below 30%, Droideka will ONLY take damage from enemy units in other columns. Droideka is immune to ANY amount of damage from the column directly in front him. You read correctly! No enemy card in the same column can damage Droideka whatsoever. This includes Mace MOV, Yoda GM, etc. When his total HP drops below the set percentage (based on skill level) due to incoming damage from other columns, then Droideka also takes damage from his own column. His skill will not reactivate when repaired by a mech. Once his HP drops too low, he is susceptible to all incoming attacks. Chanjar, however, does affect the skill, and Droideka should typically be nullified. Droideka's weakness is boosted mids and spread attacks (like Sid SD).