Gremlin Mine has two distinct activated abilities that flavor wise seem connected to each other, but with regards to the rules of the game are not. The first ability deals four damage to an artifact creature and the second removes all charge counters from a noncreature artifact. In most cases what happens will be straightforward and obvious. However if the target of one of those abilities has its types changed it can cause the ability to become countered on resolution.

For example, lets say there is a currently non-animated Chimeric Mass in play with four charge counters on it. If it is targeted by Gremlin Mine’s second activated ability, and the Mass is turned into a creature via its own activated ability then he Gremlin Mine ability will become countered. The now animated Chimer Mass will not receive four points of damage and it will not lose any charge counters.