Eldrazi Conscription

• WWizards of the Coast2010-06-15
  Official Ruling
  Annihilator abilities trigger and resolve during the declare attackers step. The defending player chooses and sacrifices the required number of permanents before they declare blockers. Any creatures sacrificed this way won't be able to block.
• WWizards of the Coast2010-06-15
  Official Ruling
  If a creature with annihilator is attacking a planeswalker, and the defending player chooses to sacrifice that planeswalker, the attacking creature continues to attack. It may be blocked. If it isn't blocked, it simply won't deal combat damage to anything.
• WWizards of the Coast2010-06-15
  Official Ruling
  Eldrazi Conscription is an Eldrazi. However, it doesn't turn the enchanted creature into an Eldrazi.
• WWizards of the Coast2018-12-07
  Official Ruling
  If a creature has multiple instances of annihilator, each triggers separately when that creature attacks.
• WWizards of the Coast2024-06-07
  Official Ruling
  While it appears only on cards that already have other card types, kindred is a card type and will be counted by effects that refer to the number of card types among cards in a zone.
• WWizards of the Coast2024-06-07
  Official Ruling
  This card was originally printed with the "tribal" card type. That card type has been replaced with "kindred". This change does not affect the gameplay function of this card.
• WWizards of the Coast2024-06-07
  Official Ruling
  Kindred is a card type that allows noncreature cards to have creature types. For example, Echoes of Eternity is an Eldrazi (although not a creature) while on the battlefield and an Eldrazi card (although not a creature card) in zones other than the battlefield.

Rulings via Scryfall