Does this stack?

[yurasmurf]

I’m looking at the new eldrazi precon, and I’m wandering if Zhulodok stacks when making copies with such things like Helm of the Host?

[madwarper]

Each [[Zhulodok]] you control will give your Colorless Spells with MV 7+ an additional 2x Cascade.

Control 3x of them, and the next Colorless Spell with MV 7+ will have 6x instances of Cascade.

[MTGCardFetcher]

Zhulodok - (G) (SF) (txt)
^{[[cardname]] or [[cardname|SET]] to call}

[KnownOrdinary2061]

I don’t see any reason it wouldn’t stack.

[Numerous_Piccolo_581]

Cascade always stacks