Column of Iridith

Card Stats

Card number 444

Rarity
71
Buy
204
Sell
40
Stores
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Although slower to enter play than normal mana generators, Columns of Iridith can provide a vastly greater mana supply.
Columns controlled by your opponent are also counted when determining the amount of mana generated.
Animated Columns are also counted. However, as these lose their ability they won't generate themselves.
Due to the large number of Columns needed for them to become more efficient than basic generators, many decks utilizing Columns are based entirely around them.
You can check how much mana you will generate per turn with different numbers of Columns in play with this table:

Mana Generation Per Turn		Opponent's Columns of Iridith
Mana Generation Per Turn		0	1	2	3	4	5
Your Columns of Iridith	1	Zero	1	2	3	4	5
	2	2	4	6	8	10	12
	3	6	9	12	15	18	21
	4	12	16	20	24	28	32
	5	20	25	30	35	40	45

Mar 29th, 2004: Card added to CSCs.
May 29th, 2004: Card released in Principalities.
Jun 2nd, 2004: Cost changed to 3 from 2. Sac value changed to 1 from 2.
May 30th, 2005: Sac value changed to 2 from 1.
Mar 6th, 2006: Effect type changed to generator from none.
Mar 13th, 2006: Effect type changed to generator building from generator.
Oct 20th, 2006: Card changed in error to make ability not work.
Nov 1st, 2006 : Card fixed make ability work.
Aug 24th, 2011: Cost changed to 2 from 3. Details in forum post
Aug 25th, 2011: Details in forum post