For The Greater: The spawn may sacrifice itself to give a friendly unit an unused spell slot of third level or lower.
The most early form of the Eldrazi. It slowly trudges on its multiple tentacles with no way to defend itself.
"There is the largest ones of all,
but the smallest can be storms.
The spawn may be no threat to you,
but heed now what I say.
If one spawn does plop dead for you,
no need for you to pray. "
~Bard of Ghirapur, Lines 19-24