Gila, The Witch Killer

At the beginning of your combat phase you may sacrifice a creature; if you do Gila, The Witch Killer gains +1/+1 counters equal to that creature's power
If Gila, The Witch has 3 or more +1/+1 counters it gains Flying
If Gila, The Witch has 6 or more +1/+1 counters it gains Deathtouch
If Gila, The Witch has 9 or more +1/+1 counters it gains Hexproof and Trample
{b}{r} - Remove up to 3 +1/+1 counters do 3 damage to X targets where X is the number counters removed. Activate only once a turn.