Eldrazi Conscription - 3 R ROE

Enchant creature
Enchanted creature gets +10/+10 and has trample and annihilator 2. (Whenever it attacks, defending player sacrifices two permanents of their choice.)
The barest taste of Eldrazi power shatters both realms and identities.
rare
Kindred Enchantment — Eldrazi Aura
From the Magic: The Gathering set Rise of the Eldrazi.