Quote Originally Posted by jin View Post
In what situation are you talking about? Mainboard or sideboard?

For sideboarding purposes, I'd run them both as bringing either or both is quite practical. I'm referring to the Tom Martell's sideboard of course.
I was referring to MTGO versions of CB with 4 Grim Lavamancer and 1 Firespout main being run by lsv. Lavamancer + Firespout are too un-synergetic imho to be run at the same time.

Both Firespout and Lavamancer don't deal with fat creatures like Goyf or KotR and one can only have so many Swords.