Creating Void Gems

Skidoo

What are the quickest or most seamless ways you create Void Gems for your Eldrazi?

I like to use Scour From Existence as my primary removal despite there being cheaper alternatives because it Ingests 3.

I hate to include a card for the sole purpose of enabling another card, like a void generator for Eldrazi, since we only get 10 cards to work wits. It feels inefficient and wasteful. Unless it contributes substantially to the deck's effectiveness. I prefer to sub cards in that also accomplish something else I want, like Scour From Existence in place of To The Slaughter or Declaration In Stone.

HomeRn

Ullamog, The Ceaseless Hunger comes to mind for the ultimate in void gem creation. Every attack causes EVERY SINGLE GEM OF YOUR OPPONENT'S COLOR to be ingested into a void gem (which can devastate certain walkers, Kiora and Sorin are especially vulnerable to this due to their mana distribution). It's expensive, can be countered easily providing there's hard removal ready to go immediately after it lands, and it's a mythic, meaning you won't see it much - but when you do... expect it to dramatically effect how the game ends.

Skidoo

If I had Ulamog, many things would be simpler.

Any good non-mythic void generators?

Chavez303

Slab Hammer creates one each time the creature attacks

Several low level eldrazi on black ingest each time they attack.