this.toughness = new MageInt(2);
// Root Sliver can't be countered.
this.addAbility(new SimpleStaticAbility(Zone.STACK, new CantCounterSourceEffect()));
// Sliver spells can't be countered by spells or abilities.
this.addAbility(new SimpleStaticAbility(Zone.STACK, new CantCounterControlledEffect(filter, new FilterStackObject(), Duration.WhileOnBattlefield)));
}