Ikmar, The Tormentor

{t}: Target creature gains a -1 -1 counter.
If this ability would destroy a creature, you gain control of it instead.
At the beginning of your upkeep, you may choose
any target creature with at least 3 -1 -1 counters.
You gain control of that creature. It gains the
subtype Imperian, and also reads: "At the
beginning of your upkeep, this creature gains a
+1 +1 counter."
"They come as prisoners, and leave as slaves."