this.power = new MageInt(1);
this.toughness = new MageInt(1);
// When Trostani's Summoner enters the battlefield, put a 2/2 white Knight creature token with vigilance, a 3/3 green Centaur creature token, and a 4/4 green Rhino creature token with trample onto the battlefield.
Ability ability = new EntersBattlefieldTriggeredAbility(new CreateTokenEffect(new KnightToken()));
ability.addEffect(new CreateTokenEffect(new CentaurToken()));
ability.addEffect(new CreateTokenEffect(new RhinoToken()));
this.addAbility(ability);
}