Suppose my opponent is playing Slivers, and has a Muscle Silver and a Metallic Sliver on the field. On my side, I have a 1/1 Goblin token. My opponent declares both Slivers as attacking, and I block the Muscle Sliver with my Goblin. After combat, I Overload an Electrickery, killing the Muscle Sliver. Since it took 1 damage and the +1/+1 from the Muscle Sliver is removed, would the Metallic Sliver die?