I just rolled a 5/8 DS. What should I put it on. 

This is what I have:

Devo Druid : 5/8 slow
Evo Drake : 5/5 Condemnation
Evo Beast Tamer : 5/5 Heaven's Wrath
Evo Cupid : 4/5 Revite
Evo SK : 5/5 Corrode
Evo PD : 4/5 Revive (waiting on zerk)
Evo Santa : 7/8 BW
Grim : 3/5 BW (waiting on 5/8 BW or 5/8 Scatter)
Ghoulem : 2/8 WG (waiting on 5/8 BW)
Aries : 4/5 Revite (Waiting on 5/5 Revite)
Medusa : 3/5 Revite (Waiting on something better)
Death Knight : 5/5 Heaven's Wrath
Treantaur : 3/5 Revite (Waiting on 5/5 Revite or something else)
PK: 4/8 Life Drain (Waiting on Scatter)
Thunder God : 5/8 Bulwark
Immortep : 5/8 WG
Reaper : 5/8 Berserk


I don't want to put it on DD, SK, Santa, Aries, Cupid, Ghoulem. The two main contenders for me seem to be Druid or Grim. What do you guys think?

Go for druid~

DS is great on the slew of heroes that are good for Arch Demon.

Siren, BT, DK, Druid, etc.  I'd put it on the one you use the most.