Iceblade Knight

Trample, Spontaneous 3 (This creature enters the battlefield with three +1/+1 counters on it. At the beginning of your end step, remove a +1/+1 counter
from this creature if possible.)
Whenever Iceblade Knight deals combat damage
to a creature, tap that creature. If there is a
+1/+1 counter on Iceblade Knight, that creature
doesn't untap during its controller's next untap
step.