Deflagration: Destroy 1 permanent for 3|2
+ 1 card (1 PC per 4 cost units)
Shard of Focus: Destroy 3 permanents for 7|5
+ 1 card + 3 turns (3 PC per 7.67 cost units = 1 PC per 2.56 cost units)
Shard of Focus + Gravity Pull: Destroy X permanents for 7|5
+ 2
+ 2 cards + X turns (X PC per 7.67+X cost units = 1 PC per 2.92 or less cost units)
I think it can be balanced if given an activation cost of say 2-3
.
2
Shard of Focus: Destroy 3 permanents for 7|5
+6
+ 1 card + 3 turns (3 PC per 11.67 cost units = 1 PC per 3.89 cost units)
Shard of Focus + Gravity Pull: Destroy X permanents for 7|5
+ 2X
+ 2
+ 2 cards + X turns (X PC per 7.67+2.33X cost units = 1 PC per 4.25 or less cost units)
3
Shard of Focus: Destroy 3 permanents for 7|5
+9
+ 1 card + 3 turns (3 PC per 13.67 cost units = 1 PC per 4.56 cost units)
Shard of Focus + Gravity Pull: Destroy X permanents for 7|5
+ 3X
+ 2
+ 2 cards + X turns (X PC per 7.67+3X cost units = 1 PC per 4.92 or less cost units)