Looming Frost Giant

Trample
Stalk {u}{u}{u} (You may play this creature face down as a 2/2 colorless creature token. You may turn it face up any time by paying its mana cost.)
When Looming Frost Giant is turned face up, scare all creatures with power 3 or less. (Those creatures can't attack or block, or activate abilities until the end of your next turn.)