convoke

other={convoke} name(Convoke)
delve
other={delve}
they might be able to be added directly to the real manacost.

added an ability that grants an ability while the source remains tapped
grant ability grantend...

added dethrone
abilities=dethrone

added support of multitargeting to extra cost, it acts the same as normal multitargeting, repeats dopay() the effects for each.

projects/mtg/include/ExtraCost.h

@@ -274,7 +274,27 @@ public:
   virtual int doPay();
   virtual Ninja * clone() const;
 };
-
+//Convoke
+class Convoke : public ExtraCost
+{
+public:
+	ManaCost * getReduction();
+	Convoke(TargetChooser *_tc = NULL);
+	virtual int canPay();
+	virtual int isPaymentSet();
+	virtual int doPay();
+	virtual Convoke * clone() const;
+};
+//delve
+class Delve : public ExtraCost
+{
+public:
+	Delve(TargetChooser *_tc = NULL);
+	virtual int canPay();
+	virtual int isPaymentSet();
+	virtual int doPay();
+	virtual Delve * clone() const;
+};
 //offering cost
 class Offering : public ExtraCost
 {