Will of the People

Convoke (Your creatures can help cast this spell.
Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Counter target spell. Will of the People deals
damage to the countered spell's controller equal
to the number of tapped creatures you control.

"The people have broke into a riot. Sir, we must
cancel the plans. The civilians do not accept them."
—Attendant of Alrag, the Uniter