Kaius, Cunning Inquisitor

At the beginning of your upkeep put a strategy counter on target creature you control and target creature you don't control.
{4}{w}{t} Until end of turn creatures you control with a strategy counter on them gain +x/+x where x is the number of strategy counters on creatures you don't control.
{4}{r}{t} Until end of turn creatures you don't control with a strategy counter on them gain -x/-x where x is the number of strategy counters on creatures you control.