Improved card icons (fix ambiguous interpretation of vigilance, first…

… and double strikes, #7471);

Mage.Client/src/main/resources/card/icons/readme-icons.txt

@@ -16,4 +16,5 @@ Folder structure:
 
 Icons sources:
   * bootstrap icons: https://github.com/twbs/icons
-  * font awesome: https://github.com/FortAwesome/Font-Awesome
+  * font awesome: https://github.com/FortAwesome/Font-Awesome
+  * pixabay: https://pixabay.com/

Mage/src/main/java/mage/abilities/icon/CardIconType.java

@@ -21,14 +21,14 @@ public enum CardIconType {
     ABILITY_DEFENDER("prepared/chess-rook.svg", CardIconCategory.ABILITY, 100),
     ABILITY_DEATHTOUCH("prepared/skull-crossbones.svg", CardIconCategory.ABILITY, 100),
     ABILITY_LIFELINK("prepared/link.svg", CardIconCategory.ABILITY, 100),
-    ABILITY_DOUBLE_STRIKE("prepared/mars-double.svg", CardIconCategory.ABILITY, 100),
-    ABILITY_FIRST_STRIKE("prepared/mars.svg", CardIconCategory.ABILITY, 100),
+    ABILITY_DOUBLE_STRIKE("prepared/swords-two.svg", CardIconCategory.ABILITY, 100),
+    ABILITY_FIRST_STRIKE("prepared/swords-one.svg", CardIconCategory.ABILITY, 100),
     ABILITY_CREW("prepared/truck-monster.svg", CardIconCategory.ABILITY, 100),
     ABILITY_TRAMPLE("prepared/grimace.svg", CardIconCategory.ABILITY, 100),
     ABILITY_HEXPROOF("prepared/expand-arrows-alt.svg", CardIconCategory.ABILITY, 100),
     ABILITY_INFECT("prepared/flask.svg", CardIconCategory.ABILITY, 100),
     ABILITY_INDESTRUCTIBLE("prepared/ankh.svg", CardIconCategory.ABILITY, 100),
-    ABILITY_VIGILANCE("prepared/khanda.svg", CardIconCategory.ABILITY, 100),
+    ABILITY_VIGILANCE("prepared/eye.svg", CardIconCategory.ABILITY, 100),
     //
     SYSTEM_COMBINED("prepared/square-fill.svg", CardIconCategory.SYSTEM, 1000), // inner usage, must use last order
     SYSTEM_DEBUG("prepared/link.svg", CardIconCategory.SYSTEM, 1000); // used for test render dialog