Quartier de Tourfourneau (Kilnspire District) (fr)
Plane - Ravnica
When you planeswalk to Kilnspire District or at the beginning of your precombat main phase, put a charge counter on Kilnspire District, then add for each charge counter on it.
Whenever chaos ensues, you may pay . If you do, Kilnspire District deals X damage to any target.