lets say.
1st case
you got active a gardy lvl x with 30 hp left.
a claydol on your bench with 30 hp left
a banette with 30 hp remaining as defending with unown g on it
and you use the gardylvl x attack which one dies?
2cnd case
you got active a gardy lvl x with 30 hp left.
a claydol on your bench with 30 hp left
a banette with 30 hp remaining as defending with unown g on it
and a claydol with 30 hp on the enemy bench
and you use the gardylvl x attack which one dies?
3rd case same as second but banette without unown g on it

1st case
you got active a gardy lvl x with 30 hp left.
a claydol on your bench with 30 hp left
a banette with 30 hp remaining as defending with unown g on it
and you use the gardylvl x attack which one dies?
2cnd case
you got active a gardy lvl x with 30 hp left.
a claydol on your bench with 30 hp left
a banette with 30 hp remaining as defending with unown g on it
and a claydol with 30 hp on the enemy bench
and you use the gardylvl x attack which one dies?
3rd case same as second but banette without unown g on it