1. If you control "Machina Sniper" and both players have 'Machina' monsters on their fields, neither player can attack 'Machina' monsters except "Machina Sniper".n2. If a face-down 'Machina' monster is attacked while "Machina Sniper" is on the field, the attack will proceed as normal because the monster is not flipped face-up until the Damage Step.n3. If a face-down 'Machina' monster is attacked while "Machina Sniper" is on the field, but the monster is flipped face-up by "Ceasefire" before the Damage Step, the attack is canceled because of the effect of "Machina Sniper".
If you control "Machina Sniper" and both players have 'Machina' monsters on their fields, neither player can attack 'Machina' monsters except "Machina Sniper".
If a face-down 'Machina' monster is attacked while "Machina Sniper" is on the field, the attack will proceed as normal because the monster is not flipped face-up until the Damage Step.
If a face-down 'Machina' monster is attacked while "Machina Sniper" is on the field, but the monster is flipped face-up by "Ceasefire" before the Damage Step, the attack is canceled because of the effect of "Machina Sniper".