You keep forgetting Era at T4
The man's hand twists hideously, and Zachariah ignores him with the exception of flicking out his knife. "Hey, die by us or die by him! Your choice! Ambrule, stratège W-H, Gravelanche!" Ambrule obeys the command and floats away from the boy, unhindered by the rocky terrain. When she gets close to the Graveler, she fires off a small, bright, blue flame, which lazily flies at the rocky Pokémon.
Move to I5, 2m up (high enough to avoid penalty of terrain, yes?)
AC: (1d20) 4, burns on impact