Zeless, Sparkformed

0: You may sacrifice a creature. If you do, put X loyalty counters on Zeless, Sparkformed, where X is the sacrificed creature's power.
-4: Create a black zombie creature token with power and toughness equal to Zeless, Sparkformed's loyalty.
-6: Create X 1/1 black zombie creature tokens, where X is equal to Zeless, Sparkformed's loyalty.