Wikia

— The Rook rips a chunk of the earth and hurls it at enemies ahead of him, dealing damage, stunning, and throwing smaller units into the air.

Level	Name	Cost	Cast Time	Cooldown	Effect
Level 5	Boulder Roll I	560	0.4s	15s	Damage enemies by 250 and stun them for 1.5 seconds. Smaller units get thrown into the air.
Level 10	Boulder Roll II	800	0.4s	15s	Damage enemies by 500 and stun them for 2.0 seconds. Smaller units get thrown into the air.
Level 15	Boulder Roll III	1064	0.4s	15s	Damage enemies by 750 and stun them for 2.5 seconds. Smaller units get thrown into the air.

NotesEdit

Boulder Roll is a good skill to set up enemies for a Hammer Slam. It is, however, very cost intensive.