Trial By Fire

Burden 3 (This enters the battlefield with 3 burden counters on it. at the beginning of each upkeep, remove
a burden counter from it. Then, if it has no burden counters on it, sacrifice it.)
Whenever you remove a burden counter
from Trial By Fire, put a -2/-2 counter on target creature you control, it then fights another target creature you control.
When the last burden counter is removed from
Trial By Fire, all creatures you control with -2/-2 counters gain +4/+4 and First Strike.