It is slapping 5 hits at a time:
In this case I parried 2, shielded 3, thus losing 3 charges of Kinetic Ward all within 1 thousandth of a second. This is a fairly stupid mechanic.
Its a Mechanic. You work around it. it does not affect other tank types and hence cannot be called stupid as it might hit a jugg for all 5. Its just a matter of changing tactics as an assassin and going in with higher def+hp and lower shield.
When you go to the second phase, get other tank to hold aggro for 2 secs, use force cloak and change relics. Have not tried if this works but in theory it should.