extra options in challange mode?

[0rion79]

What's the decklist? Part of your confusion may be that "1.5" is not a real thing in Magic anymore. Its closest equivalent is Legacy, but that's different.
And yes, winning challenges definitely requires lots of patience and/or luck.

How Legacy is different from 1.5? Ah, in that deck I didn't use any restricted card.

Anyway, this is the deck, a sort of "explorative" one to see how the challenge was, but I've not even be able to start

;CM Anti Sliver
;W-G-U Challenge Mode
;Orion79
;orpheananger@hotmail.com
;23/11/2009
;1
;4th Edition
;

.726 2 Moat
.1585 2 Baneslayer Angel
.240 4 Swords to Plowshares
.588 4 Path to Exile
.803 1 Sylvan Library
.48 4 Counterspell
.720 4 Mana Drain
.1744 1 Honden of Cleansing Fire
.1745 1 Honden of Seeing Winds
.292 2 Amnesia
.1176 2 Treasure Trove
.64 2 Disenchant
.1096 2 Naturalize
.318 4 Fellwar Stone
.1205 4 Seaside Citadel
.188 2 Plains
.252 4 Tropical Island
.254 4 Tundra
.212 4 Savannah
.126 2 Island
.91 1 Forest

[aww1979]

Seaside Citadel is the culprit in that deck. It isn't a basic land or dual land. Most of the challenge #3 decks restrict you to those.

[monopoman]

Basic lands are obviously

Swamp, Plains, Island, etc..

Duals are just

Plateau, Bayou, Badlands etc..

Just that cycle while people call any land that produces 2 mana of different colors sometimes a "dual" land.

There is only one true set of Dual Lands the ones I said above.

[0rion79]

Seaside Citadel is the culprit in that deck. It isn't a basic land or dual land. Most of the challenge #3 decks restrict you to those.

Ah!!! I've missed that part in the text, thank you.