I'm amazed this hasn't been posted yet,
This is a screen of the guilds sacrifice.
http://img11.hostingpics.net/pics/819683Base.pngIn short,
Guild AdvantagesGold exchange
+ 1,000,000 gold for the guild
Cost: 200,000 guild points
Gold Coin
+ 1 gold coin for 1 player
Cost: 1,000,000 guild points
Increasing bloodlust
+200 ferocity permanently
Cost: 7,500,000 guild points
Portal duration
-2 hours duration permanently.
Cost: 12,500,000 Guild Points
Single Player BenefitsThese advantages apply permanently for every player in the guild. This also applies to players who are joined by a sacrifice of the guild. Once a player leaves the guild, he loses these benefits.
Increase ATK
+100 ATK for research
Cost: 4,000,000 guild points
Increase DEF
+100 DEF for research
Cost: 4,000,000 guild points
Increasing bloodlust
+20 ferocity
Cost: 6,000,000 guild points
Dungeon time reduction
-30 minutes duration
Cost: 7,000,000 guild points
Production time reduction
-3% of time at all productions
Cost: 10,000,000 Guild Points
Army extension
+4 units
Cost: 15,000,000 Guild Points
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You have to understand, all base upgrade (DS inclued) are worth 33 850 000 Guilds Points and all "Permanent Upgrade" are worth 66 000 000 Guilds Points
(Army extension, Production time reduction, Dungeon time reduction, Increasing bloodlust (Single), Increase Atk/DEF, Portal duration, Increasing bloodlust (Guild)
That make a lot of points to make out of portail ^^