Guilds

There are ten 3-colour 'guilds':

Contiguous: two enemies and an ally colour
WUB--	Gnagrri	(Steven Irrgang, confirmed)
-UBR-	Ikol	(Loki Patrick, confirmed)
--BRG	Volrak	(David Karlov, probable)
W--RG	Ramnagrom	(David Morgan-Mar, confirmed)
WU--G	Iaz	(Darren Zai, will have a go)
Eclectic: two allies and an enemy colour
WU-R-	Gnik	(Andrew King?)
-UB-G	Rek-oc	(Andrew Coker?)
W-BR-	Hsi Elcm	(David McLeish, confirmed)
-U-RG	Werdna	(Andrew Shellshear, probable in 2009)
W-B-G	Snillum	(Sebastian Mullins, probable)

Each inventor only makes cards in the colours of his guild. So Loki will make the blue-black-red guild Ikol, and will only invent blue cards, black cards, red cards, and blue-black-red cards.

Hybrid mana

Casting costs can use the 2-colour hybrid mana symbols, such as which can be mixed to produce 3-colour cards:

Keyword

Each guild will have one keyword, which epitomises some common feature of that combination of three colours.

In Ravnica, each two-colour guild had a keyword which belonged equally in both colours.

We're aiming to do the same for the three-colour guilds in Thriceborn. (For some guilds, it's actually quite difficult to find a feature or ability which belongs equally in each of the three colours! But that's just part of the fun of the challenge.)

Number of cards

Each player will contribute 45 cards to the draft (equivalent of 3 boosters). But they needn't be 45 unique cards. Instead 18 to 20 unique cards are recommended:

• 11 commons, printed 3 times each, producing 33 printed cards
• 4 to 6 uncommons, some duplicates, producing 9 printed cards
• 3 rares

Possible 10-card cycles