Name:Hired Muscle
ManaCost:1 B B
Types:Creature Human Warrior
PT:2/2
T:Mode$ SpellCast | ValidCard$ Card.Spirit,Card.Arcane | ValidActivatingPlayer$ You | Execute$ TrigPutCounter | OptionalDecider$ You | TriggerZones$ Battlefield | TriggerDescription$ Whenever you cast a Spirit or Arcane spell, you may put a ki counter on CARDNAME.
T:Mode$ Phase | Phase$ End of Turn | IsPresent$ Card.Self+counters_GE2_KI | Execute$ TrigFlip | OptionalDecider$ You | TriggerZones$ Battlefield | TriggerDescription$ At the beginning of the end step, if there are two or more ki counters on CARDNAME, you may flip it.
SVar:TrigPutCounter:AB$PutCounter | Cost$ 0 | Defined$ Self | CounterType$ KI | CounterNum$ 1
SVar:TrigFlip:AB$SetState | Cost$ 0 | Defined$ Self | Mode$ Flip
DeckHints:Type$Spirit|Arcane
SVar:Picture:http://www.wizards.com/global/images/magic/general/hired_muscle.jpg
AlternateMode:Flip
Oracle:Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Hired Muscle.\nAt the beginning of the end step, if there are two or more ki counters on Hired Muscle, you may flip it.

ALTERNATE

Name:Scarmaker
ManaCost:1 B B
Colors:black
Types:Legendary Creature Spirit
PT:4/4
A:AB$ Pump | Cost$ SubCounter<1/KI> | KW$ Fear | ValidTgts$ Creature | TgtPrompt$ Select target creature | SpellDescription$ Target creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)
SVar:Picture:http://www.marc-fowler-design.com/cardforge/flippedcards/BOK/scarmaker.jpg
# This link may be a temporary solution and could change in the near future.
Oracle:Remove a ki counter from Scarmaker: Target creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)