How to obtain monster spawners?

[alibertz]

I saw in one of Chimneyswift's video a witch mob grinder setup. The spawners he was using were lined up three in a row, so I thought that there would have to be some way he obtained the spawners and placed them there. Is there a way to do this or did he cheat?

[Kr0nZ]

Witch spawners do spawn naturally around the map.

The PortaSpawner from MFR can pick up spawners, and I think the block teleported from random things can also move spawners.

[DragonScythe]

Portaspawner is rather expensive, so Block Teleporter would be your best option.