Eldrazi Conscription is a rare Kindred Enchantment — Eldrazi Aura card from Secret Lair Drop (SLD), collector number 1218. Current market price: $13.64 (foil $16.88), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature gets +10/+10 and has trample and annihilator 2. (Whenever it attacks, defending player sacrifices two permanents of their choice.)