The Soulless Sisters

The Soulless Sisters enters the battlefield with
+1/+1 counters on it equal to the number of
times cards you control have the mana cost {x} in their texts and mana costs
Lands you control provide X {u} mana where X is
the number of instant and socery cards with the
mana cost {x} in your graveyard.
"You don't yell out in pain, you whisper to the ones
who have already suffered from it."