Dementia at its finest.

[Shiro, Time Devourer]

Chainer is abusive combo material, since not only is he a reanimator, but he can be used as both a loophole and a beautiful pull-my-finger card.

Chainer/Unnatural Selection
The best 3rd card is Aether Burst, which will probably save your nightmares if you have any. After you burst the Dementia Master, turn X creatures into nightmares to zot them permanently. I've only gotten this off once (with only one of each card in possession), but 4 of each should fix that for most U/B control decks, even 'Tog, if you feel like it. (Well, he has to get through somehow, and nuking enemy critters does help).

Chainer/Spore Frog
Kicks Rites, Tog and other heavy hitting decks in the junk. You can't lose anymore than 3 life per attack, since it costs nothing to blow a spore frog.

Chainer/Staunch Defenders
Gain while you chain. Can't beat that.

Chainer/Pandemonium
Chain big creatures to make the process a little more bearable for you by making it less bearable for your opponent.

 

[Mikeymike]

Well his heavy black makes AEther Burst tough to cast, but anything like Buried Alive or Entomb should serve him quite well. If you want to Chain a life gainer, Ancestor's Chosen will do you much better than Staunch Defenders.

Milling/Traumatize your opponent and taking his best creatures will piss him off quite nicely.

 

[train]

Again, Coat of Arms anyone??? Don't forget to ask your opponent how they like their spankings when it hits play.