imagine this
Ftr 4/Cleric 6
BAB +8/+3
20 Strength (+5)
Melee +10/+5
4d4+7+2 (+5x1.5)
Feats
Level 1 - Fighter
Weapon Focus (Scythe), Power Attack, Expertise
Level 2 - Fighter
Cleave
Level 3 - Fighter
Combat Reflex
Level 4 - Fighter
Weapon Specialization (Scythe), Stat Increase (Str)
Level 5 - Cleric
N/A
Level 6 - Cleric
Greater Cleave
Level 7 - Cleric
N/A
Level 8 - Cleric
Stat Increase (Str)
Level 9 - Cleric
Improved Crit
Level 10 - Cleric
N/A
ok ... now according to table 2-24 for the DMG a 10th level character is now 49,000.
Now we make a scythe (this is a random Neutral guy so YMMV).
Scythe is +318. We'll make it a +1 Scythe
Keen adds +1
Mighty Cleaving adds +1
So now its an equivilant to a +3 weapon. Well +3 is 18,000 and add the Scythe is +318 so total right now is 18,318.
He now has 30,682 to spend. Give him some armor and some natural armor and BAM ... Super Necro!!!