Name:Lethal Exploit
ManaCost:1 B
Types:Instant
A:SP$ Pump | ValidTgts$ Creature | TgtPrompt$ Select target creature | NumAtt$ -X | NumDef$ -X | IsCurse$ True | SpellDescription$ Target creature gets -2/-2 until end of turn. It gets an additional -1/-1 until end of turn for each modified creature you controlled as you cast this spell. (Equipment, Auras you control, and counters are modifications.)
SVar:X:Count$LastStateBattlefieldWithFallback Creature.modified+YouCtrl/Plus.2
DeckHints:Type$Aura|Equipment & Ability$Counters
Oracle:Target creature gets -2/-2 until end of turn. It gets an additional -1/-1 until end of turn for each modified creature you controlled as you cast this spell. (Equipment, Auras you control, and counters are modifications.)