cards/CardCoin.cs
using Sandbox;
using System.Net;
using System.Threading.Tasks;

public class CardCoin : Card
{
	public override bool ShouldHandleEvent( EventType eventType )
	{
		switch ( eventType )
		{
			case EventType.Match:
				return Manager.Instance.ChosenCards[1] == this;
		}

		return false;
	}

	public override async Task HandleEventAsync( EventType eventType )
	{
		Manager.Instance.PushEventMessage( this, eventType );

		await Task.DelayRealtime( 150 );

		if(CardType == CardType.MoneyBag)
		{
			Manager.Instance.PlayCardSfxBetween( "money_bag", Manager.Instance.ChosenCards[0], Manager.Instance.ChosenCards[1], volume: 1f, pitch: Game.Random.Float( 0.9f, 1.1f ) );
			await Task.DelayRealtime( 150 );
		}
		
		Manager.Instance.PlayCardSfxBetween( "coin", Manager.Instance.ChosenCards[0], Manager.Instance.ChosenCards[1], volume: 1.4f, pitch: Game.Random.Float( 0.9f, 1.1f ) );

		await Task.DelayRealtime( 50 );

		int moneyAmount = (CardType == CardType.MoneyBag ? 5 : 2) + (int)Manager.Instance.Stats[StatType.EarnExtraMoney];

		Manager.Instance.SpawnGainMoneyFloater( moneyAmount, WorldPosition );

		await Manager.Instance.GainMoney( moneyAmount );

		await Task.DelayRealtime( 700 );

		Manager.Instance.PopEventMessage();
	}
}