cards/CardDetective.cs
using Sandbox;
using System.Threading.Tasks;

public class CardDetective : Card
{
	public override bool IsAlive => true;

	public override bool ShouldHandleEvent( EventType eventType )
	{
		return eventType == EventType.TurnStart && Game.Random.Float(0f, 1f) < 0.50f;
	}

	public override async Task HandleEventAsync( EventType eventType )
	{
		var nearbyCards = Manager.Instance.GetNearbyCards( GridPos );
		if ( nearbyCards.Count == 0 )
			return;

		Manager.Instance.PushEventMessage( this, eventType );

		nearbyCards.Shuffle();
		var cardToReveal = nearbyCards.FirstOrDefault();

		await Task.DelayRealtime( 100 );

		Manager.Instance.PlayCardSfx( "detective", cardToReveal, volume: 0.4f, pitch: Game.Random.Float( 0.9f, 1.1f ) );

		await Task.DelayRealtime( 150 );

		Manager.Instance.PlayCardSfx( "card_flip", cardToReveal, volume: 0.8f, pitch: Game.Random.Float( 1.15f, 1.2f ) );
		await Manager.Instance.RevealCard( cardToReveal );

		await Task.DelayRealtime( 950 );

		Manager.Instance.HideCard( cardToReveal );
		Manager.Instance.PlayCardSfx( "card_flip", cardToReveal, volume: 0.7f, pitch: Game.Random.Float( 0.65f, 0.75f ) );

		await Task.DelayRealtime( 300 );

		Manager.Instance.PopEventMessage();
	}
}