Shantien

Flying, Haste, First Strike, Fireblight, Iceblight, Waterblight
Shantien enters the battlefield with x time
counters. At the beginning of your upkeep
remove a time counter from Shantien, if you
can't sacrifice Shantien.
{x}{x}: Put x time counters on Shantien
{10}{u}{r}{w}: Destroy x creatures where x is the
amount of time counters that have been removed
from Shantien