I believe that 4 Treasure Cruise in the UB Reanimator list could be wrong and through testing I have found that it is great in longer and grindier games with a lot of disruption back and forth (the MBC matchup) but it is slow. It should probably be a 5th reanimation target, a Muddle the Mixture and 2 Hapless Researcher or something along those lines.
As for the 5th Reanimaton target. I believe it is between Hand of Emrakul and Jungle Weaver. Jungle Weaver has the added benefit of being able to put itself in the gy for us and having reach could be useful. Although, Hand of Emrakul ends the game quicker and annhilator is nothing to scoff at.
UB Reanimator
2 Hapless Researcher
4 Ulamog's Crusher
1 Hand of Emrakul
Sorceries (24)
4 Gitaxian Probe
4 Ponder
4 Preordain
4 Duress
4 Careful Study
4 Exhume
4 Brainstorm
4 Daze
4 Spell Pierce
1 Muddle the Mixture
Lands (16)
3 Evolving Wilds
3 Terramorphic Expanse
3 Dismal Backwater
6 Island
1 Swamp
2 Nihil Spellbomb
3 Funeral Charm
2 Disfigure
2 Innocent Blood
1 Doom Blade
2 Dispel
1 Negate
2 Hydroblast
Perilous Affinity
4 Auriok Sunchaser
4 Carapace Forger
4 Frogmite
4 Myr Enforcer
Sorceries (4)
4 Thoughtcast
4 Galvanic Blast
4 Perilous Research
Artifacts (12)
4 Chromatic Star
4 Ichor Wellspring
4 Prophetic Prism
4 Ancient Den
4 Great Furnace
4 Seat of the Synod
4 Tree of Tales
4 Darksteel Citadel
2 Gorilla Shaman
1 Dispel
2 Electrickery
2 Hydroblast
3 Pyroblast
3 Standard Bearer
2 Stone Rain
As for the 5th Reanimaton target. I believe it is between Hand of Emrakul and Jungle Weaver. Jungle Weaver has the added benefit of being able to put itself in the gy for us and having reach could be useful. Although, Hand of Emrakul ends the game quicker and annhilator is nothing to scoff at.
Because you can't have 5 copies of one card in a deck?
4 Putrid Imp
4 Ulamog's Crusher
2 Hand of Emrakul
Sorceries (26)
4 Gitaxian Probe
4 Ponder
4 Preordain
4 Duress
4 Careful Study
2 Distress
4 Exhume
4 Dark Ritual
Enchantments (2)
2 Dragon Breath
Artifacts (4)
4 Lotus Petal
Lands (14)
2 Evolving Wilds
2 Terramorphic Expanse
4 Island
6 Swamp
4 Daze
2 Distress
1 Hand of Emrakul
1 Dragon Breath
2 Nihil Spellbomb
3 Funeral Charm
2 Disfigure