Blisterpod

Eldrazi Scions are similar to Eldrazi Spawn, seen in the Zendikar block. Note that Eldrazi Scions are 1/1, not 0/1.

A card with devoid is just colorless. It's not colorless and the colors of mana in its mana cost.

If a card loses devoid, it will still be colorless. This is because effects that change an object's color (like the one created by devoid) are considered before the object loses devoid.

Other cards and abilities can give a card with devoid color. If that happens, it's just the new color, not that color and colorless.

Eldrazi and Scion are each separate creature types. Anything that affects Eldrazi will affect these tokens, for example.