N1337 & M897 vs. N1211

[Vacdeil]

While is in play, if my opponent deploys , targets my and I chain N1211's effect to N1337's and I target N1211 itself, would N1211 take 0 or 1 Damage?

Both M897 and N1211 have Replacement Effects, even though they don't say "instead" and still don't have any errata to correct that, so what happens when 2 Replacement Effects would replace the same effect? The Attacker chooses which one works?

Thanks.