How to use

init

method

in

mage.abilities.effects.common.continuous.GainControlTargetEffect

@Override
public void init(Ability source, Game game) {
  super.init(source, game);
  // save target id to be available for hidden state based triggered effect
  game.getState().setValue("target" + source.getSourceId(), getTargetPointer().getFirst(game, source));
}

@Override
public void init(Ability source, Game game) {
  Player controller = game.getPlayer(source.getControllerId());
  if (controller != null) {
    int maxToughness = 2;
    ManaCosts manaCosts = source.getManaCostsToPay();
    if (!manaCosts.getVariableCosts().isEmpty()) {
      maxToughness = source.getManaCostsToPay().getX();
    }
    Permanent permanent = game.getPermanent(getTargetPointer().getFirst(game, source));
    if (permanent != null && permanent.getToughness().getValue() > maxToughness) {
      this.discard();
      return;
    }
  }
  super.init(source, game);
}

  super.controllingPlayerId = winner.getId();
super.init(source, game);