Name:Unstable Mutation
ManaCost:U
Types:Enchantment Aura
K:Enchant:Creature
SVar:AttachAILogic:Pump
S:Mode$ Continuous | Affected$ Creature.EnchantedBy | AddPower$ 3 | AddToughness$ 3 | Description$ Enchanted creature gets +3/+3.
T:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ Player.EnchantedController | TriggerZones$ Battlefield | Execute$ TrigPutCounter | TriggerDescription$ At the beginning of the upkeep of enchanted creature's controller, put a -1/-1 counter on that creature.
SVar:TrigPutCounter:DB$ PutCounter | Defined$ Enchanted | CounterType$ M1M1 | CounterNum$ 1
Oracle:Enchant creature\nEnchanted creature gets +3/+3.\nAt the beginning of the upkeep of enchanted creature's controller, put a -1/-1 counter on that creature.
