Name:Musician
ManaCost:2 U
Types:Creature Human Wizard
PT:1/3
K:Cumulative upkeep:1
A:AB$ PutCounter | Cost$ T | ValidTgts$ Creature | TgtPrompt$ Select target creature | IsCurse$ True | CounterType$ MUSIC | CounterNum$ 1 | SubAbility$ PayThePiper | SpellDescription$ Put a music counter on target creature. If it doesn't have "At the beginning of your upkeep, destroy this creature unless you pay {1} for each music counter on it," it gains that ability.
SVar:PayThePiper:DB$ Animate | Defined$ Targeted | Permanent$ True | Keywords$ At the beginning of your upkeep, destroy this creature unless you pay {1} for each music counter on it | Triggers$ TrigMusicianPay | sVars$ MusiciansSpite,MusicX | ConditionDefined$ Targeted | ConditionPresent$ Card.withoutAt the beginning of your upkeep, destroy this creature unless you pay {1} for each music counter on it | ConditionCompare$ GE1
#The keyword added does nothing itself other than create a keyword string to check against in the conditional
SVar:TrigMusicianPay:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ You | TriggerZones$ Battlefield | Execute$ MusiciansSpite | Secondary$ True | TriggerDescription$ At the beginning of your upkeep, destroy this creature unless you pay 1 for each music counter on it.
SVar:MusiciansSpite:AB$ Destroy | Cost$ 0 | Defined$ Self | UnlessCost$ MusicX | UnlessPayer$ You | References$ MusicX
SVar:MusicX:Count$CardCounters.MUSIC
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/musician.jpg
Oracle:Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)\n{T}: Put a music counter on target creature. If it doesn't have "At the beginning of your upkeep, destroy this creature unless you pay {1} for each music counter on it," it gains that ability.