Kilnspire District
Plane — Ravnica
When you planeswalk to Kilnspire District and at the beginning of your first 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.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL