- Added support for restrictions in alternate costs (same as those of AbilityFactory).

- Added Lashknife.

.gitattributes

@@ -4226,6 +4226,7 @@ res/cardsfolder/l/lapse_of_certainty.txt svneol=native#text/plain
 res/cardsfolder/l/laquatuss_champion.txt svneol=native#text/plain
 res/cardsfolder/l/larceny.txt svneol=native#text/plain
 res/cardsfolder/l/lash_out.txt svneol=native#text/plain
+res/cardsfolder/l/lashknife.txt -text
 res/cardsfolder/l/lashknife_barrier.txt svneol=native#text/plain
 res/cardsfolder/l/lashwrithe.txt svneol=native#text/plain
 res/cardsfolder/l/last_breath.txt svneol=native#text/plain

res/cardsfolder/l/lashknife.txt

@@ -0,0 +1,11 @@
+Name:Lashknife
+ManaCost:1 W
+Types:Enchantment Aura
+Text:no text
+K:Enchant creature
+A:SP$ Attach | Cost$ 1 W | ValidTgts$ Creature | AILogic$ Pump
+S:Mode$ Continuous | Affected$ Creature.EnchantedBy | AddKeyword$ First Strike | Description$ Enchanted creature has first strike.
+SVar:AltCost:Cost$ tapXType<1/Creature> | IsPresent$ Plains.YouCtrl | Description$ If you control a Plains, you may tap an untapped creature you control rather than pay Lashknife's mana cost.
+SVar:Rarity:Common
+SVar:Picture:http://www.wizards.com/global/images/magic/general/lashknife.jpg
+End

src/main/java/forge/card/cardFactory/CardFactoryUtil.java

@@ -4490,6 +4490,11 @@ public class CardFactoryUtil {
                     sb.append(" rather than pay ").append(card.getName()).append("'s mana cost.");
                 }
                 
+                SpellAbility_Restriction restriction = new SpellAbility_Restriction();
+                restriction.setRestrictions(mapParams);
+                restriction.setZone(Constant.Zone.Hand);
+                altCostSA.setRestrictions(restriction);
+
                 altCostSA.setDescription(sb.toString());
 
                 card.addSpellAbility(altCostSA);