Unnerving Assault

Instant — {2}{U/R}

Creatures your opponents control get -1/-0 until end of turn if {U} was spent to cast this spell, and creatures you control get +1/+0 until end of turn if {R} was spent to cast this spell. (Do both if {U}{R} was spent.)

Rareza: uncommon

Rango EDHREC: 31516