Chittering Host
Creature — Eldrazi Horror
Haste
Menace (This creature can't be blocked except by two or more creatures.)
When this creature enters, other creatures you control get +1/+0 and gain menace until end of turn.
Jason Felix
Eldritch Moon (EMN)
• #96bRulings
The set of creatures affected by Chittering Host's triggered ability is determined as the ability resolves. Creatures you begin to control later in the turn won't get +1/+0 or gain menace.
(wotc • 2016-07-13)
If a card in a player's graveyard has {X} in its mana cost, X is considered to be 0.
(wotc • 2016-07-13)
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).
(wotc • 2016-07-13)
Rulings
The set of creatures affected by Chittering Host's triggered ability is determined as the ability resolves. Creatures you begin to control later in the turn won't get +1/+0 or gain menace.
(wotc • 2016-07-13)
If a card in a player's graveyard has {X} in its mana cost, X is considered to be 0.
(wotc • 2016-07-13)
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).
(wotc • 2016-07-13)