When you land the Tiny Bronco on the beach of the Wutai continent, you can encounter monsters called Adamantai. They look like giant turtles. You can manipulate them into casting Death Force on your party.

Further ashore, in the dark green grassland, you can encounter Razor Weeds. They look like brown plants. You can manipulate them into casting Magic Hammer on your party.

Incidently, you can fight and win both E-skills without triggering the Yuffie theft.