|| Sonic Listening Device 
Mark critters to let them drop more health
Can you hear the Solar bubble?
| Extra Health || +20
- Even though this is an upgrade for Chain Whack, killing Creeps with Rage or Evil Eye will also give you 50 health.
- Any Creep "marked" by being hit by Ayla will also give 50 health to any 'naut that kills it, even enemies!
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