Test for keyword "CanPlayFromGraveyard"

Also added card [Crucible of Worlds] as example of it.

projects/mtg/bin/Res/test/_tests.txt

@@ -249,6 +249,7 @@ curiosity2_i217.txt
 crimson_kobolds.txt
 crosis_s_catacombs_1.txt
 crosis_s_catacombs_2.txt
+crucible_of_worlds.txt
 crumble.txt
 crystal_rod_i172.txt
 cursed_land1_i188.txt

projects/mtg/bin/Res/test/crucible_of_worlds.txt

@@ -0,0 +1,26 @@
+# Testing crucible of worlds (keyword: CANPLAYFROMGRAVEYARD)
+
+# name=Crucible of Worlds
+# text=You may play land cards from your graveyard.
+
+[INIT]
+FIRSTMAIN
+[PLAYER1]
+hand:island,plains
+inplay:crucible of worlds
+graveyard:forest,mountain
+[PLAYER2]
+[DO]
+forest
+# all next lands shouldn't be played
+island
+mountain
+plains
+[ASSERT]
+FIRSTMAIN
+[PLAYER1]
+inplay:crucible of worlds,forest
+hand:island,plains
+graveyard:mountain
+[PLAYER2]
+[END]