Uh... where'd all this information come from and why is there summoner stuff when this is a scythe?
See this thread on BG: 
A highly unreliable source if you ask me, and as far as I know no one's actually done any testing on it yet, so I'm slapping a verification tag on it. --Merton Dew 23:17, 17 October 2008 (UTC)
A friend of mine has Y's Scythe sitting in storage, so I got him to do some testing as DRK/SMN. With Ares's Cuirass and no weapon equipped, Fenrir takes 4 MP per tick. When he equips Y's Scythe, that goes down to 2 MP/tick. So it does seem that Y's Scythe acts as a Dark Staff as well as a scythe. Kind of nifty... --Valyana 03:30, 21 October 2008 (UTC)
I very much doubt it gives a 20% boost in Dark Magic accuracy thats near a +70-80 boost in magic acc what i would believe is it works like a dark staff does and is a +10 boost or +10% since no one has proved the boost on macc on staffs a verification will be needed --Rezeak 02:12, 30 October 2008 (UTC)
Magic acc is very much proven on elemental staves, there is even conclusive proof out there that a light staff significantly improves Charms (a job ability) success. Do some research --Kanito 15:28, 30 November 2008 (UTC)
But not on Y's Scythe. --Timfung 02:33, 26 December 2008 (UTC)
Kanito what i ment was there is no evidence on how big the boost are on staffs until recently since the new RDM WS has allowed testing and has shown the boost is between 20-30 macc on the HQ staves so since this resembles the NQ Staves the boost will be a 10-15 macc boost and not a % as suggested by the poster the actul number and even conformation of even a boost i feel will never be confirmed. Since this is the case i have remove the 20% from the macc and macc down claims -Rezeak 20:21, 26 January 2009 (UTC)