Barrel Rock + Corroding Shark → Stone Ghost

Barrel Rock + Skelgon → Stone D.

Barrel Rock + Bone Mouse → Stone Ghost

Barrel Rock + Dark Elf → Mystical Sand

Barrel Rock + Mushroom Man #2 → Minomushi Warrior

Barrel Rock + Tyhone #2 → Stone D.

Barrel Rock + The Wandering Doomed → Stone Ghost

Barrel Rock + Oscillo Hero → Minomushi Warrior

Barrel Rock + Lesser Dragon → Stone D.

Barrel Rock + Witch of the Black Forest → Mystical Sand

Barrel Rock + Dark Witch → Mystical Sand

Barrel Rock + Greenkappa → Minomushi Warrior