How does React with Conviction interact with corruption counters?
The corruption counter (from Corruption or Reformation or Revelation of Despair/Wrath or Contagion) would be placed, as normal. Then, when the option to take control is exercised (and canceled by React with Conviction), the effect of burning counters to take control doesn’t occur. Not because the counters are a cost, but because the effect that would burn them is canceled.