- Added a new AI SVar: MustAttack.

- Added it to Mad Dog.

res/cardsfolder/m/mad_dog.txt

@@ -8,6 +8,7 @@ SVar:TrigSacrifice:AB$ Sacrifice | Cost$ 0 | ConditionCheckSVar$ X | ConditionSV
 SVar:Y:Count$ThisTurnEntered_Battlefield_Card.Self
 SVar:Z:Count$Valid Card.Self+attackedThisTurn
 SVar:X:SVar$Y/Plus.Z
+SVar:MustAttack:True
 SVar:Rarity:Common
 SVar:Picture:http://www.wizards.com/global/images/magic/general/mad_dog.jpg
 SetInfo:ODY|Common|http://magiccards.info/scans/en/od/202.jpg

res/cardsfolder/n/nantuko_mentor.txt

@@ -5,6 +5,7 @@ Text:no text
 PT:1/1
 A:AB$ Pump | Cost$ 2 G T | ValidTgts$ Creature | TgtPrompt$ Select target creature | NumAtt$ X | NumDef$ X | SpellDescription$ Target creature gets +X/+X until end of turn, where X is that creature's power.
 SVar:X:Targeted$CardPower
+SVar:RemAIDeck:True
 SVar:Rarity:Rare
 SVar:Picture:http://www.wizards.com/global/images/magic/general/nantuko_mentor.jpg
 SetInfo:ODY|Rare|http://magiccards.info/scans/en/od/255.jpg

src/main/java/forge/ComputerUtilAttack.java

@@ -443,6 +443,7 @@ public class ComputerUtilAttack {
         // Attackers that don't really have a choice
         for (final Card attacker : this.attackers) {
             if ((attacker.hasKeyword("CARDNAME attacks each turn if able.")
+                    || !attacker.getSVar("MustAttack").equals("")
                     || attacker.hasKeyword("At the beginning of the end step, destroy CARDNAME.")
                     || attacker.hasKeyword("At the beginning of the end step, exile CARDNAME.")
                     || attacker.hasKeyword("At the beginning of the end step, sacrifice CARDNAME.")