New DE troop: The Thief

The Thief is a dark elixir troop that ,like goblins, attack resource buildings. However, the Thief has a difference: He can only be spotted by defenses, Heroes and CC troops if he is attacking something. He is invisible while walking and he also can't activate traps.

Stats
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____| Dps (resources 3x) | HP | Training cost |
Lvl 1 |------15------------|165|---- 35 DE----|
Lvl 2 |------20------------|180|---- 45 DE----|
Lvl 3 |------26------------|210|---- 60 DE----|
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Movement speed : 24
Preferred target : resources
Housing space : 6
Training time : 5 Min
Attack type : Single/Ground

Research Stats
__________________________________________________ ____
____| Research cost | Laboratory Level required | Research Time |
lvl 2 |---30,000 DE--|-----------------6----------|------4 days----|
lvl 3 |---50,000 DE-- |-----------------7----------|------6 days----|
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Hope you liked my idea for a new Dark Elixir troop:D
Give your opinion about it in the comments and sorry for the bad english:p