Unnerving Predator

When Unnerving Predator enters the battlefield,
up to one target player reveals their hand. Exile
all creature cards with mana value 2 or less from
that player's hand.
Channel - {x}{b}{g}, Discard Unnerving Predator:
Target player reveals their hand. Exile all
creature cards with mana value X or less
from that player's hand.
Reach, vigilance