Creature â Eldrazi Horror
Menace (This creature can't be blocked except by two or more creatures.)
When Chittering Host enters the battlefield, other creatures you control get +1/+0 and gain menace until end of turn.
Jason Felix INTERVIEW
The set of creatures affected by Chittering Hostâ€™s triggered ability is determined as the ability resolves. Creatures you begin to control later in the turn wonâ€™t get +1/+0 or gain menace.
For more information on meld cards, see the Eldritch Moon mechanics article (https://magic.wizards.com/en/articles/archive/feature/eldritch-moon-mechanics-2016-06-27).