Latios ex, phermosa gx, electrode gx and silent lab. the first 2 for being part of decks that win in one turn, electrode gx for the garchomp giratina gx deck against which they are extremely boring and unfair and the silent lab because I hate it
They could have done so many things to make terrastalize pokemon interesting and they chose the most mechanically boring and insignificant option they could. I'm sure 99% of people would have a better idea for this without even giving it much thought.