Skelek, Ruinous Performer

+1: Flip a coin. If heads, exile target permanent. If tails, sacrifice a permanent you control.
-3: Create a token creature warrior that has haste, trample, attacks each turn if able, sacrifice at end of round, and power and toughness 7/1.
-6: Create an emblem with "At the start of each opponent's upkeep, they sacrifice a nonland permanent."