Rule 652.2
Remove the Battlefield they contributed to the game if it is in use.
- 652.2.a If it was in use, Replace it with a token battlefield with no abilities.
- 652.2.b Any units or hidden cards there do not move and are otherwise unaffected by this process. See rule 438. Replace for…
- 652.2.c If the removed battlefield was applying any continuous effects, those continuous effects immediately cease, which may…