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

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

	public override bool ShouldHandleEvent( EventType eventType )
	{
		return eventType == EventType.Reveal && Manager.Instance.RevealedCard == this;
	}

	public override async Task HandleEventAsync( EventType eventType )
	{
		var twins = Manager.Instance.GetCardsOfType( CardType.Twins, except: this );
		if ( twins.Count == 0 )
			return;

		var twin = twins[Game.Random.Int( 0, twins.Count - 1 )];

		Manager.Instance.PushEventMessage( this, eventType );

		await Task.DelayRealtime( 200 );

		Manager.Instance.PlayCardSfx( "twins", this, volume: 0.85f, pitch: Game.Random.Float( 0.95f, 1.05f ) );

		MoveToPos( LocalPosition + (twin.LocalPosition - LocalPosition).Normal * 5f, 0.25f, EasingType.QuadInOut, removeControlAfter: !IsMovementControlled );

		await Task.DelayRealtime( 500 );

		Manager.Instance.PopEventMessage();
	}
}